basic hull

Pro/ENGINEER

2001

Basic Hull
Topic Collection

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6 September 2000

Basic Hull

Table of Contents

About the Ship Framing System ........................................................................ 7

Example: Frame Spacing Data ........................................................................... 7

To Define the Ship Framing System .................................................................. 7

To Modify a Frame Spacing Table Entry ........................................................... 8

Frame Spacing Tables......................................................................................... 9

Frame Spacing Table Errors............................................................................... 9

About Creating a Feature Based on the Ship Reference System ................. 10

To Create a Feature Using the Ship Reference System................................. 10

About the Ship Reference System ................................................................... 10

About Ship Compartments ............................................................................... 11

To Create a Ship Compartment ........................................................................ 11

To Redefine a Compartment............................................................................. 12

To Modify a Compartment ................................................................................ 12

Create Ship Compartment Errors..................................................................... 12

About the Compartment Specification File ..................................................... 12

Example: COMPTGROUP Data Format............................................................ 13

Example: COMPROPERTY Data Format.......................................................... 14

Example: COMPNAME Data Format ................................................................ 14

About Converting BMT Data............................................................................. 15

Example: Offset Tolerance Comparison Output Files ................................... 15

PTS Output File Format..................................................................................... 16

BMT to PTS Conversion Points........................................................................ 16

Example: BMT Offset Output File..................................................................... 17

Basic Hull

Example: Converted PTS File Format.............................................................. 17

To Convert from BMT to Pts ............................................................................. 17

To Compare a Hull Surface to an Offset File .................................................. 18

About Tank Table Reports ................................................................................ 18

Example: Tank Table Reports .......................................................................... 18

Tank Table Configuration Option..................................................................... 19

To Generate a Tank Table Report .................................................................... 19

Parameters Required for Tank Table Report .................................................. 19

Basic Hull Glossary ........................................................................................... 20

About Creating Bulkhead Surfaces ................................................................. 24

To Create a Planar Bulkhead Surface.............................................................. 24

To Create a Stepped Bulkhead Surface........................................................... 25

To Create a Swedged Bulkhead Surface ......................................................... 26

To Create a Corrugated Bulkhead Surface ..................................................... 28

Corrugated Bulkhead Stool Gap ...................................................................... 30

Create Bulkhead Surface Errors ...................................................................... 30

To Redefine a Bulkhead Surface...................................................................... 30

About Creating a Hatch Coaming .................................................................... 31

Example: Hatch Coamings ............................................................................... 31

To Create a Hatch Coaming.............................................................................. 32

Coaming Parameters......................................................................................... 33

To Modify a Hatch Coaming ............................................................................. 34

About Creating Deck Surfaces ......................................................................... 34

To Create a Deck Surface ................................................................................. 34

About the Pro/ENGINEER Shipbuilding Solution ........................................... 36

Basic Hull

About the User Interface ................................................................................... 37

Basic Hull Menu Options .................................................................................. 37

Basic Hull Shortcut Menus ............................................................................... 38

Hull Dialog Boxes .............................................................................................. 39

Create Deck Surface Errors .............................................................................. 39

About Classification Codes .............................................................................. 40

About the Classification Description File........................................................ 40

Classification Description File (CDF) Format ................................................. 40

Classification Identification Definitions .......................................................... 41

To Assign Classification Information .............................................................. 43

To Remove Classification Information ............................................................ 43

About Curve Font and Color Assignment ....................................................... 43

To Assign the Font and Color of a Curve........................................................ 43

Changing the Font and Color of a Curve......................................................... 44

About Naming Conventions ............................................................................. 44

To Assign a Name to a Surface or Curve Entity ............................................. 44

About Importing and Verifying the Hull Data .................................................. 45

Basic Hull

About the Ship Framing System

In ship design, the ship framing system and coordinate system (the ship reference system) provide an
environment that allows designers of all disciplines (conceptual and structural hull, accommodation, electrical,
HVAC, piping, and outfitting) to position application objects and to set up references easily and consistently.

The Pro/ENGINEER Shipbuilding Solution provides a native design tool to meet the needs of the shipbuilding
industry by allowing you to define the ship framing and coordinate systems in a single operation. In Basic Hull
you can define the ship coordinate system and ship framing system in the early stages of ship design and then
reference the ship framing system in all the subsequent design and manufacturing processes.

The ship coordinate system defines the primary reference points, dimensional parameters, and orientation of the
ship. Using the Framing System functionality in Basic Hull, you can create the ship framing system, which
defines the position of the transverse frames of a ship along the longitudinal direction (x-axis).

The Framing System functionality also defines the location of the Aft Perpendicular (AP), Forward
Perpendicular (FP), Midship (MS), Keel, and Centerline (CL) planes of the ship. References are drawn from
these datum planes to specify locations. The frame landing curves on the hull are also generated using the Ship
Framing System functionality.

Example: Frame Spacing Data

Frames are defined in the form of integers followed by spacing. For example, the table below shows frame
spacing for frame from 0 to 20 at spacing of 600 mm, from 20 to 50 at spacing of 800 mm, from 50 to 100 at
spacing of 300 mm, and from 100 to 130 at spacing of 700 mm. This spacing data would define a total frame
spacing distance of 72,000 mm, or 72 meters.

Upto

Spacing

600

800

100

300

130

700

To Define the Ship Framing System

Before you can define the Ship Framing System, you must define a Csys (Coordinate System) that represents
the origin of the ship reference system. Usually, this is the same coordinate system used as a reference if you are
working from imported data. The first perpendicular reference coordinate system is at the selected reference
Csys without any offset. The remaining perpendicular reference is positioned a distance (LBP) away from the
first reference point, along the longitudinal direction (X-axis). This is the default (AP to FP) implementation;
however you can change the reference point to the FP, and the reverse of this statement is true.

You must have the hull quilt created in the skeleton as the active part, with a Csys present for the Framing Sys
menu option to be available. The selected Csys will be referenced when defining the first frame landing (frame
0) of the Ship Framing System.

1. Click Applications > Basic Hull > Set Up > Framing Sys.
2. The Framing System dialog box opens. In the Feature Element Tree the red arrow points to the first empty

element. If you have not defined a framing system it will point to Framing System > References. In the
References section, enter the required information in the following fields:

- Reference Quilt—If there is only one quilt in the part, it is selected by default. If not, select the hull

quilt.

- Reference Csys—If there is only one Csys in the skeleton part, the Csys is selected automatically as

the origin of the ship. If it is not, select the Csys at the origin of the ship.

Basic Hull

- Initial Offset—Specify the Initial Offset to locate Frame 0. The default is 0.0. The offset distance you

specify positions Frame 0 along the longitudinal direction (x-axis), referenced from either the AP or FP
based on the framing direction.

- Length Between Perpendiculars—Specify the LBP to locate the FP and MS.
- Framing Direction—Specify the framing direction from the following options:

AP to FP—Frame 0 is at AP and other frames are numbered incrementally from aft to fore (the +x-
direction).
FP to AP—Frame 0 is at the FP and other frames are numbered incrementally from fore to aft (the –x-
direction).

3. Click Next to access the Frame Spacing Table section.
4. Select one of the following ways to define your Frame Spacing Table.

Define frame spacing data for each data element:

a. Enter

the

Upto Frame value. The Upto Frame value is number of the last frame in a given section.

With the exception of Frame 0, each section begins with the last frame number from the previous
section. Beginning with Frame 0, the frame numbers increase sequentially toward the stem (forward).
Enter a negative frame number to specify a frame toward the aft or stern.

b. Enter the Frame Spacing distance between two frames in a section.

c. Click

to add or remove a record from the Frame Spacing Table.

If you have defined a Frame Spacing Table using Pro/TABLE:

a. Click

. The Select Frame Spacing Data File dialog box opens.

b. Select the .ptd file then click Open. The frame spacing data loads from the table file.

5. Click

if you want to check the ship framing system graphically before committing to the current

session.

6. Click

to create a framing system feature with the following datum entities:

- AP—If the AP to FP option is selected (default), a datum plane parallel to the y-z plane at the selected

datum Csys or ship origin representing the Aft Perpendicular (AP).

If the FP to AP option is selected, a datum plane parallel to the y-z plane at an offset distance from the
FP datum using the Length Between Perpendiculars value.

- FP—If the AP to FP option is selected (default), a datum plane parallel to the y-z plane at an offset

distance from the AP using the Length Between Perpendiculars value representing the Forward
Perpendicular (FP).

If the FP to AP option is selected, a datum plane parallel to the y-z plane at the selected datum Csys or
ship origin representing the Forward Perpendicular.

- MS—A datum plane parallel to the y-z plane will be created automatically at the Amidship (MS)

position, which is halfway between AP and FP.

- CL—A datum plane parallel to the x-z plane created automatically at the Centerline (CL) position, in

the longitudinal direction, going through the selected datum Csys or ship origin.

- Keel—A datum plane parallel to the x-y plane created automatically at the baseline position, going

through the selected datum Csys or ship origin.

- For each frame landing—A frame datum plane parallel to the y-z plane is created automatically at the

specified position along the x-axis.

- For each frame landing—A frame landing datum curve is created automatically at the intersection

between the corresponding frame datum plane and the selected hullform quilt(s).

To Modify a Frame Spacing Table Entry

With the hull quilt in the skeleton as the active part:

Basic Hull

1. Click Applications > Basic Hull > Set Up > Framing Sys. The Framing System dialog box opens.
2. Click an existing entry under Frame Spacing Table or double-click the target Frame Spacing Data element

in the Feature Element Tree to select it.

3. Select the active parameter to redefine in either the Upto Frame or Frame Spacing field.
4. Specify the Upto Frame number or the Frame Spacing distance and press Enter. The information in the

Frame Spacing Table changes.

5. Click

to add a new entry or

to remove an entry.

6. Click

to rebuild the framing system.

Frame Spacing Tables

To create a framing system, you must define a frame spacing table. You can do this manually in the Framing
Spacing Table section of the Framing System dialog box, or you can read in the information from a Frame
Spacing Table file.

You can create a Frame Spacing Table using Pro/TABLE, which creates an external .ptd file. This file can be
loaded into the Framing System dialog box when you define your Framing System.

After the information from the file has been loaded into the Frame Spacing Table section of the dialog box, you
can modify the information.

The following conventions apply to the Frame Spacing Table file:

· A row beginning with an exclamation mark (!) is a comment line.
· The first column contains the Upto Frame value.
· The second column contains the Frame Spacing value.

For example:

!# Pro/TABLE
!# Pro/TABLE TM Version I-03-20 (c) 1988-99 by Parametric Technology
Corporation All Rights Reserved.
![] W 8;
![] S 92;
!"Frame Spacing Table "
!"Upto" "Spacing"
52 0.85
101 3.7
120 0.8
..
..

Frame Spacing Table Errors

If the selected frame spacing table does not open you receive the following error message:

Failed to open file <filename>

If the selected file is not a valid Pro/TABLE file, you receive the following error message:

File <filename> is of invalid type

If data with an improper format is found in the file, you receive the following error message:

Bad data format in row <n>

Basic Hull

About Creating a Feature Based on the Ship
Reference System

You can create a feature based on the ship reference system by identifying a location through three references
along longitudinal, transverse, and vertical directions of the ship. The point or the Csys you define is created at
that location.

Other application features that need to identify a location in ship space can also interface to this menu option,
accessible from the Insert > Datum menu.

For example, you can now identify a location within ship space for objects such as stiffener end points, pipeline
start and end points, and gravity points of outfitting equipment, using the ship reference system.

To Create a Feature Using the Ship Reference
System

You can create datum points or a Csys from the ship reference system in the Basic Hull, Structural Hull, or
Piping applications.

To create a feature based on the Ship Reference System, you must have a ship framing system feature defined
within the hull skeleton part in the active assembly.

1. Begin with Step a to create a datum point or with Step b to create a coordinate system:

a. Click

Insert > Datum > Point. Select Add New from the DTM PNT MODE menu and From Ship

Ref from the DATUM POINT menu. The Datum Point dialog box opens.

b. Click Insert > Datum > Coordinate System. Then select From Ship Ref and Done from the Options

menu. The Coordinate Sys dialog box opens.

2. Select a location along the longitudinal, transverse, or vertical direction of the ship.

- Reference—Select a reference datum plane or a quilt from which the offset distance will be measured.

By default the AP, CL, and the KEEL are selected as the longitudinal transverse and the vertical
reference respectively.

If you want to search for a reference, click

to open the Search Name dialog box. You can

search for names containing a user-specified character string. Under Keyword enter a character string
for which you want to search. The references containing this string appear in the Available window.

- Direction—Choose from the list to indicate the direction.

Longitudinal options are AFT and FWD (forward).
Transverse options are PORT and STBD (starboard).
Vertical options are UP and DOWN.

- Offset—Specify the offset distance from reference geometry. The distance is measured in the direction

specified.

3. Under Name, a default name will be assigned. You can change this name.

4. Click

to create a datum point or Csys.

A unique location is identified in the ship space using the ship coordinate system defined within the hull
skeleton part in active assembly. The point or the Csys defined is created at that location.

About the Ship Reference System

Designers use the Ship Reference System to position objects and set up references among other design objects
consistently during ship design.

Basic Hull makes the definition of the Ship Reference System easier by allowing users to define the entire
framing system in one operation. The datum planes and frame landing curves are created accordingly to
represent the ship framing system in the top-level assembly skeleton part.

Basic Hull

About Ship Compartments

A ship is subdivided into compartments bounded by internal subdivision surfaces such as the decks, bulkheads,
watertight floors, and so forth. The Compartment functionality in Basic Hull provides a way to model a ship
compartment in a single operation by specifying bounding surfaces. It generates a component in the ship
assembly and creates a solid compartment feature.

To Create a Ship Compartment

Before you can create a compartment, the hull, inner hull, hopper tank, and wing tank boundaries must be
classified using Setup > Class. If you use any surfaces created using standard Pro/ENGINEER surfacing tools
or using copy geom, they must be appropriately classified. That is, if you use surfaces other than Basic Hull
surfaces to bound the compartment, they must be appropriately classified.

Note: a bulkhead stool created by stepped bulkhead functionality is classified as stool.

1. In Assembly mode, click Applications > Basic Hull > Compartment. The Compartment dialog box

opens. In the Feature Element Tree, the Compartment tree is selected, and a red arrow points to a new
compartment to be defined.

2. In the Compartment Attributes Table section, select the Compartment Type from the option list. You

can assign multiple compartment types to a compartment.

3. The default values for Specific Gravity, Filling Ratio, and Permeability are read from the Compartment

Specification File through the configuration option. You can change the defaults if desired using the
following values:

- Specific Gravity—Any positive value is valid.
- Filling Ratio—The valid range is 0.00% to 100.00%.
- Permeability—The valid range is 0.00 to 1.00.

4. Click

to access the Compartment Identification section. Default values for the following

entries are derived from definitions provided in the Compartment Specification File.

- Compartment ID String—This list is populated from the list of valid identification strings defined in

the Compartment Specification File. You can change the text string if desired.

- Compartment ID Serial—This field is automatically populated with a serial number based on the

previous compartment number created under the same group. You can change the serial number if
desired.

- Compartment ID Number—This number is generated by appending the serial number to the group

number. The group number is determined by the specified compartment contents. This field cannot be
edited.

- Compartment Name—A compartment name is automatically generated and displayed in this field

based on previous inputs and the format specified in the compartment specification file. You can edit
this field and provide a different name.

5. Click

to access the Compartment Extents section. Specify the compartment bounding planes

and surfaces using the standard GET SELECT menu. You can select multiple surfaces to define the
following compartment extents:

- Top quilt
- Starboard quilt
- Bottom quilt
- Port quilt
- Forward quilt
- Aft quilt

6. Click

to preview the new compartment.

Click

to create the new compartment in the active assembly and create a component feature in the

Basic Hull

new compartment.

To Redefine a Compartment

1. Do one of the following:

- In Assembly mode, click Applications > Basic Hull > Redefine. When the GET SELECT menu

appears, select the compartment you want to redefine.

- In the compartment component part, right-click on the compartment feature and select Redefine from

the shortcut menu.

2. The Redefine Compartment dialog box opens to the Compartment Attributes Table section.
3. Make the necessary changes to the compartment specifications.

4. Click

To Modify a Compartment

You can modify the compartment features, or add or remove volume from a compartment using the following
procedure.

1. In Assembly mode do one of the following:

- Click Applications > Basic Hull > Mod Compart.
- Right-click, and then select Modify > Basic Hull > Mod Compart.

2. When the GET SELECT menu appears. Select the compartment to modify.
3. The Compartment dialog box opens to the Compartment Extent section. Under Compartment Volume,

select Add or Remove.

4. Select the extents of the compartment you want to modify. The options are:

- Top Quilt
- Starboard Quilt
- Bottom quilt
- Port quilt
- Forward Quilt
- Aft Quilt

5. Click

Create Ship Compartment Errors

If the selected boundaries specifying the extents do not form a closed volume you will receive the following
error message:

Selected boundaries do not enclose a volume.

About the Compartment Specification File

The Compartment Specification File allows you to associate default values with a compartment type. After you
create this file, default values appear in the Compartment dialog box during compartment creation, based on
the compartment type selected.

If there is no specification file, no default values are associated during compartment creation.

The Compartment Specification File is created using Pro/TABLE and includes the following sections:

COMPTGROUP

The COMPTGROUP is the group identification number for compartments that have a common type of
content. A unique identification number for each compartment is generated by adding an incremental
number to this group identification number. For example, if water ballast compartments have a group
identification number of 200, the specific compartments would be 201, 202, 203.

Basic Hull

The COMPTGROUP section also describes the content and the valid identification strings to be used to
name specific compartments.

COMPROPERTY

The COMPROPERTY section defines certain properties of compartment content identified as a group in
COMPTGROUP.

COMPNAME

The COMPNAME section specifies the format of compartment name string.

Example: COMPTGROUP Data Format

The first column contains the keyword COMPTGROUP to indicate the type of information being specified in
the current section.

The second column indicates the group number being assigned to the current group.

In the third column, the first entry for each identified group (such as group 100) is the text string that identifies a
group of compartments. Subsequent entries in this cell list valid identification strings to name a specific
compartment type within this grouping. So for example, a CARGO compartment can be a CARGO HOLD,
CARGO C.O.T.(S), or any of the other text strings listed under the CARGO type.

Keyword

Group ID Number

Description/Valid Indentification String

COMPTGROUP

100

CARGO

HOLD

C.O.T.(S)

C.O.T.(P)

C.O.T.

S.C.O.T.(P)

S.C.O.T.(S)

SLOP_T

COMPTGROUP

200

WATER BALLAST

T.S.W.B.T.(S)

D.B.W.B.T.(S)

D.B.W.B.T.(P)

F.P.T

A.P.T

COMPTGROUP

300

FUEL OIL

H.F.O.T.(C)

H.F.O.T.(S)

H.F.O. SETT. T.

COMPTGROUP

400

DIESEL OIL

M.D.O.T.(S)

M.D.O.T.(P)

M.D.O. SERV. T.

COMPTGROUP

500

LUBRICATING OIL

L.O. SUMP T.

CYL.L.O. STOR.T

Basic Hull

COMPTGROUP

600

FRESH WATER

F.W.T.(S)

F.W.T.(P)

D.W.T.(S)

COMPTGROUP

700

OTHERS

C.W.T

Example: COMPROPERTY Data Format

The first column contains the keyword COMPROPERTY to indicate the type of information available under
this section.

The second column shows the group identification number described in the COMPTGROUP section.

The next three columns specify specific gravity, filling percentage, and default permeability for the
corresponding content group.

Keword

Group ID
Number

Specific Gravity

Filling Percentage

Permeability

COMPROPERTY

100

0.95

0.99

COMPROPERTY

200

1.025

100

0.98

COMPROPERTY

300

0.9

0.985

COMPROPERTY

400

COMPROPERTY

500

COMPROPERTY

600

COMPROPERTY

700

Example: COMPNAME Data Format

The format for COMPNAME consists of one or more text strings and one numeric field. The text strings
specified within the angle brackets <> indicate that they are keywords and the software translates them using
the appropriate numeral or string. The format can be specified in a number of different combinations such as:

COMPNAME NO.<N>_<COMPTGROUP>
COMPNAME <COMPTGROUP>-<GN>
COMPNAME <COMPTGROUP>-<N>
COMPNAME <COMPTGROUP>_NO.<N>

where:

indicates a valid Compartment ID String as specified in the first section of compartment

specification file. If the Compartment Specification File includes more than one valid string, you must select
the appropriate Compartment ID String from the option list in the Compartment Identification section of the
Compartment dialog box.
<N>

is replaced by the Compartment ID Serial number. This number is generated automatically based on

previously created compartment number in the active assembly. You can change this number in the
Compartment Identification section of the Compartment dialog box.
<GN>

is replaced by the Compartment ID Number, which is generated by adding a serial number to the

group identification number.

Examples

The following examples show the statement and the corresponding compartment names, based on a selection of
the serial number and compartment group.

Basic Hull

The statement:

NO.<N>_<COMPTGROUP>

results in compartment names such as:

NO.1_HOLD, NO.2_HOLD, NO.1_D.B.W.B.T.(P)

The statement:

results in compartment names such as:

HOLD-101, HOLD-102, F.P.T.-201, M.D.O. SERV. T.-401

About Converting BMT Data

To compare BMT source data, you must convert it to a format that can be imported into Pro/ENGINEER and
Pro/VERIFY.

The BMT to PTS option allows you to import a BMT offset file and convert it to a Pro/ENGINEER offset table
(.pts) file.

Example: Offset Tolerance Comparison Output Files

The results of the offset tolerance comparison are output to a file that can be read in during the creation of
datum point features. This example shows the format of the output file.

Offset Tolerance Comparison for <filename.prt>
List of Crossings for Waterlines
Tolerance = 0.100
# Frame Distance Half Height dy
No. fr

AP(x) Width(y) (z)

20.0

13.523

3.00

0.03

20.0

14.47

4.00

0.04

. . . . . .
. . . . . .
1

20.8

15.23

3.00

0.11

20.8

16.24

4.00

0.09

. . . . . .
. . . . . .
1

21.6

16.55

3.00

0.12

21.6

17.08

4.00

0.03

. . . . . .
. . . . . .
List of Crossings for Buttock lines
Tolerance = 0.100
# Frame Distance Half Height dz
No. fr

AP(x) Width(y) (z)

20.0

5.00

8.56

0.02

20.0

6.00

9.34

0.04

. . . . . .
. . . . . .
1

20.8

5.00

10.23

0.11

20.8

6.00

11.38

0.09

. . . . . .
. . . . . .
1

21.6

5.00

11.41

0.12

21.6

6.00

12.49

0.01

. . . . . .
. . . . . .

List of Crossings for knuckle STERN (Center Contour)
Tolerance = 0.100

# Frame Distance Half Height dx

Basic Hull

No. fr

AP(x) Width(y) (z)

5.23

0.00

3.00

0.08

4.78

0.00

4.00

0.02

3.66

0.00

5.00

0.12

2.34

0.00

6.00

0.04

. . . . . .
. . . . . .

PTS Output File Format

The format of the Pro/ENGINEER point (.pts) output file allows it to be read in during the creation of datum
point features.

Output File Information

Description

Offset Tolerance Comparison
for <filename.prt>

The File header and <filename.prt> is the
name of the part that contains the hull surface

Tolerance = 0.100

The tolerance value input for the comparison.

Indicates the incremental count of the number of
points in the file.

Frame No

The frame number corresponding to x value of the
point, taken from BMT data.

The x value of the point, taken from the BMT data.

The y value of the point, taken from the BMT data.

The z value of the point, taken from the BMT data.

The difference between the BMT x value and the
value determined in Pro/ENGINEER.

The difference between the BMT y value and the
value determined in Pro/ENGINEER.

The difference between the BMT z value and the
value determined in Pro/ENGINEER.

STEM, FOB and FOS Formats

The format for other groups such as knuckle STEM, FOB (flat of bottom), and FOS (flat of side) will include
the following tolerance comparisons:

· Knuckle STEM—The dx is checked.
· FOB—The dz is checked.
· FOS—The dy is checked.

BMT to PTS Conversion Points

Pro/ENGINEER allows you to convert BMT offset data into Pro/ENGINEER points (.pts) files. The .pts
files are then used to check the surface tolerance.

The BMT offset table contains the following information about frame offset curves:

Curve Name

Data Used to Calculate

Calculated Data

Direction to
Check

Stern

Waterline height, half width (fixed by
zero)

Distance from origin

Stem

Waterline height, half width (fixed by
zero)

Distance from origin

Basic Hull

Transom

Waterline height, distance from origin
(fixed)

Half width

MID

Waterline height, distance from origin
(fixed)

Half width

DZ > DY

Seam

Distance from origin (matched
Frame), height

Half width

Skeg

Waterline height, half width (fixed)

Distance from origin

FOB

Distance from origin (matched
Frame), height (fixed by 0)

Half width

FOS

Distance from origin(matched Frame),
half width (fixed)

Height

Waterline

Frame, waterline

Half width

Buttockline

Frame, buttockline

Height

Example: BMT Offset Output File

This example shows the format of the BMT offset table.

List of Crossings for Knuckle STERN Aft
Waterline Dist. From Origin Half Width Height
0.0000 8.8847 0.0000 0.0000
8.9128 0.0000 0.0000
0.5000 7.5223 0.0000 0.5000
1.0000 7.3165 0.0000 1.0000
1.5000 7.1816 0.0000 1.5000

List of Crossings for Waterline Aft
Frame Wat Wat Wat Wat Wat
19.0000 20.0000 21.0000 22.0000 23.0000
18.0000 17.0870 17.2147 17.2400 17.2402 17.2399
19.0000 17.3833 17.5075 17.5318 17.5319 17.5317

Example: Converted PTS File Format

The converted Pro/ENGINEER point (.pts) file has the following structure:

· Each line has four columns.
· The first column contains information that shows the check direction, frame number, and section name,

separated by colons (:).

· The subsequent columns have x, y, z coordinate values, separated by spaces.

For example:

DX:9999.0000:Knuckle_STERN_Aft 8.884700 0.000000 0.000000
DX:9999.0000:Knuckle_STERN_Aft 8.912800 0.000000 0.000000

DZ:11.1410:FOB_Aft 8.912800 0.000000 0.000000
DZ:12.0000:FOB_Aft 9.600000 0.225700 0.000000

DY:9.0000:Waterline_Aft 7.200000 0.176900 1.500000
DY:9.0000:Waterline_Aft 7.200000 0.448200 2.000000

To Convert from BMT to Pts

Before you can compare the hull surface to an offset file, you must convert the BMT offset file to a
Pro/ENGINEER point (.pts) file.

Basic Hull

1. In Basic Hull Part mode, click Hull Part > Set Up > BMT to Pts. The BMT to Pts dialog box opens.

2. In the BMT Data field, type the name of external file that contains the offset table. Click

to open a

dialog box so that you can browse for a file.

3. Under Output Directory type the name of the external directory in which you want to put the output file.
4. Under Output File Name type the new name of the external file that will contain the converted data. It will

have a .pts extension.

To Compare a Hull Surface to an Offset File

1. Open the surfaced hull part in the active window.
2. In Basic Hull Part mode, click Info > Shipbuilding. The Shipbuilding Info dialog box opens.
3. Under Info Type, select Tolerance Check from the list.
4. Under Point File, enter the name of the external (.pts) file that contains the offset points against which the

surface will be checked.
Click Browse to use a standard file open dialog box to browse for a file.

5. Under Ref Csys, select the Csys in the part file that corresponds to point 0,0,0 in the BMT offset file. This

point is either the Aft Perpendicular (AP) or the Forward Perpendicular (FP) of the ship. The default is AP.

6. Under Tolerance Value, specify the value to use to determine if the points are within tolerance of the

surface.

7. Under Info File specify the contents and whether to create an output file:

- All—All points are written to a file. Points out of tolerance are indicated as such.
- Tol Only—Only the points out of tolerance are written to the file.
- None—No file is written.

8. Click Info to perform the tolerance check.

Points that have differences greater than the tolerance value are highlighted in red. This highlighting remains on
the screen until a repaint is done. You can reposition the hull surface, zoom, pan, rotate, without losing the red
highlighted points.

About Tank Table Reports

Basic Hull provides a report generation capability that allows you to calculate the volume and center of gravity
for defined tanks that are within the active working Pro/ENGINEER assemblies. This report determines the
volume, vertical center of gravity, longitudinal center of gravity, and transverse center of gravity for a defined
compartment or set of compartments.

You can initiate a tank table report only on an assembly that contains compartments.

The tank table information is available in text format as well as in a drawing table for display on appropriate
drawings.

Report Structure

Tanks are grouped by tank type as assigned to the compartments. Each set of compartment types included in the
report has a summary line that totals the volume and calculates the center of gravity for that total volume.

Each tank type has a separate repeat region on the resulting drawing.

The centers of gravity are reported for full volume (corresponding to the Center of Volume). By default the
center of gravity values are reported with respect to the Aft Perpendicular (AP) of the ship. However, the
Longitudinal Center of Gravity (LCG) can be reported with respect to the AP Forward Perpendicular (FP), or
Midship (MS) by setting a configuration option. The Vertical Center of Gravity (VCG) is reported with respect
to the Keel and the Transverse Center of Gravity (TCG) is reported with respect to the centerline (CL) plane of
the ship.

Example: Tank Table Reports

The Tank Table Report is provided in a Pro/ENGINEER standard Information window in the following format:

Basic Hull

COMPARTMENT TABLE

=================

----------------------------------------------------------------------

COMPARTMENT

LOCATION

CAPACITIES

CENTER OF GRAVITY

Id.NO

Name

(FRAMES)

FULL VOL

WEIGHT

LCG

VCG

TCG

----------------------------------------------------------------------

CARGO

SG*FILLING RATIO = 1.000000*100%

----------------------------------------------------------------------

101

COT_1S

90.0-133.0

13844.5

234.67

13.50

-9.84

102

COT_1P

90.0-133.0

13844.5

234.67

13.50

9.84

---------------------------------------------

TOTAL

27689.0

234.67

13.50

0.00

WATER BALLAST

SG*FILLING RATIO = 1.025000*100%

----------------------------------------------------------------------

201

WB_1S

90.0-106.0

1462.1

1498.6

233.75

1.48

-8.36

202

WB_1P

90.0-106.0

1462.1

1498.6

233.75

1.48

8.36

203

WB_2P

73.0-90.0

2223.2

2278.8

167.72

1.41

11.84

204

WB_2S

73.0-90.0

2223.2

2278.8

167.72

1.41

-11.84

205

WB_3P

54.0-73.0

1760.5

1804.5

65.54

1.47

8.89

---------------------------------------------

TOTAL

9131.1

9359.4

173.70

1.45

1.78

Tank Table Configuration Option

When you create a tank table report, you can choose whether to report the longitudinal Center of Gravity with
respect to the Aft Perpendicular (AP), Forward Perpendicular (FP), or Midship (MS). Set the following
configuration option to either AP, FP, or MS:

LCG_REFERENCE_OPTION

To Generate a Tank Table Report

In Basic Hull, with an active assembly that contains at least one compartment:

1. Click Info > Shipbuilding. The Shipbuilding Info dialog box opens.
2. Under Info Type, select General and Tank Table.
3. Select one or more compartments for which you want information.
4. The information appears in the Results area of the dialog box and is written automatically to a file named

<partname>.tnk.1.

If this file already exists, then another file is created, with the version number

incremented by a value of 1.

5. Click Info to display the report in an Information window. You can save this report using the File > Save

As command in the Information window.

Parameters Required for Tank Table Report

The information provided in the tank table report must be provided on a drawing. Use Pro/REPORT to add the
drawing attributes.

The new parameters required are listed in the table. Parameters are generated and saved when a tank table report
is initiated.

Description of Reported
Information

Additional Pro/REPORT
Parameter

Parameter Places

Tank Name

asm.mbr.ship.tank.name

Each compartment part

Basic Hull

Longitudinal Center of Gravity

asm.mbr.ship.tank.cgl

Each compartment part

Vertical Center of Gravity

asm.mbr.ship.tank.cgv

Each compartment part

Transverse Center of Gravity

asm.mbr.ship.tank.cgt

Each compartment part

Tank Type

asm.mbr.ship.tank.type

Each compartment part

Tank Volume

asm.mbr.ship.tank.vol

Each compartment part

Specific Gravity

asm.mbr.ship.tank.sg

Each compartment part

Filling Ratio

asm.mbr.ship.tank.fr

Permeability

asm.mbr.ship.tank.pm

Top assembly

Basic Hull Glossary

Abaft

Aft of; toward the stern or rear end of ship from a designated location.

Aft

Toward, at, or near the stern or rear end of ship.

Amidships

In the vicinity of the mid-length of a ship as distinguished from the ends. Technically, it is exactly half way
between the forward and after perpendiculars.

Abbreviation for After Perpendicular.

See Length Between Perpendiculars.

Baseline

A fore-and-aft reference line at the upper surface of the flat plate keel at the centerline for flush shell plated
vessels. Vertical dimensions are measured from a horizontal plane through the baseline, often the molded
baseline.

Bilge

The intersection of the bottom and side. The lower part of holds, tanks, and machinery spaces where bilge
water may accumulate.

Bilge keel

Longitudinal fins fitted normally by welding one on each side of the hull, at the turn of the bilge, to reduce
rolling.

Bow

The forward end of a ship.

Bracket

A plate used to connect rigidly two or more structural parts such as deck beam to frame, or bulkhead
stiffener to deck or tank top (usually triangular in shape).

Bulbous bow

A bulb-like protrusion at the bow to reduce wave induced drag on the hull. It is built integral with the bow
structure of the ship and positioned below the design waterline.

Bulkhead

The term applied to a vertical partition wall that subdivides the interior of a ship into compartments or
rooms. The various types of bulkheads are distinguished by their location, use, type of material, or method
of fabrication. Examples are forepeak, longitudinal, transverse, watertight, wire mesh, and pilaster.

- Bulkheads that contribute to the strength of a vessel are called strength bulkheads.
- Bulkhead that are essential to the watertight subdivision are called watertight or oiltight bulkheads.
- Bulkheads that prevent the passage of gas or fumes are gastight bulkheads.

Basic Hull

Butt

The end joint between two plates (normally transverse edges) or other members that meet end to end.

Camber

The rise, or crown, of a deck across the breadth of a ship.

Centerline

A reference line running fore-and-aft at the inner surface of the flat of the keel and along the center of the
ship.

Classification Society

A registry that classifies or certifies a ship to be structurally sound and seaworthy. The society also approves
all key plans or documents required to build a new ship.

Datum

General term for seam, butt, or landing type of reference curves on the molded surface of ship. Represents
plate boundaries and stiffener landings.

Deck

A platform in a ship that is the equivalent to a floor in building. It is the plating, planking, or covering of
any tier of beams either in the hull or in the superstructure (accommodation space) of a ship.

Design Waterline

The waterline at which the ship is intended to float in its design condition.

Draft

The depth of the ship below the waterline measured vertically between the lowest part of the hull,
propellers, or other reference point.

Fair

To smooth the lines of a ship to eliminate irregularities, or to assemble the parts of a ship so that they will be
fair, without kinks, bumps, or waves.

Flange

The part of a plate or shape bent at right angles to the main part; to bend over to form an angle.

Floor

Vertical transverse plate immediately above the bottom shell plating, often located at every frame, extending
from bilge to bilge (which joins the bottom and side of ship). Can be rounded or angular.

Fore

A term used in indicating portions of that part of a ship at or adjacent to the bow. Also applied to that
portion and parts of the ship lying between amidships and the stern, such as forebody, forehold, and
foremast.

Fore-and-aft

In line with the length of the ship; longitudinal.

Abbreviation for Forward Perpendicular.

See Length Between Perpendiculars.

Frame

One of the transverse members that make up the rib-like part of the skeleton of a ship. The frames act as
stiffeners, holding the outside plating in shape and maintaining the transverse form of the ship. Technically,
a frame section is a generalized term to indicate the intersection on the hull surface by a transverse plane (y-
z plane).

Frame Spacing

The fore-and-aft distance, heel to heel (intersecting with the centerline), of adjacent transverse frames.

Basic Hull

Girder

A continuous deep structural member running fore-and-aft under a deck to support the deck beams and
deck. The girder is generally supported by widely spaced pillars. Also, the vertical fore-and-aft plate
members on the bottom of single or double bottom ships.

Girth

Any expanded length, such as the length of a frame from gunwale to gunwale.

Gunwale

A curved longitudinal plate connecting the side shell plating to the outermost deck plate.

Hatch

An opening in a deck through which cargo and stores are loaded or unloaded

Hull

The structural body of a ship.

Inboard

Inside the ship; toward the centerline.

Inner Bottom

A horizontal surface above the bottom shell of ship. The plating forming the top of a double bottom; also
called tank top.

Keel

The principal fore-and-aft component of the framing of a ship, located along the centerline of the bottom
and connected to the stem and stern frames.

Knuckle

An abrupt change in direction of surface, plating, frames, keel, deck, or other structure of a ship.

Landings

The trace of various stiffener welding paths on a shell plating, deck, or bulkhead.

LBP

Abbreviation for Length Between Perpendiculars.

Length Between Perpendiculars

The length of a ship between the forward and after perpendiculars. The forward perpendicular is a vertical
line at the intersection of the fore side of the stern and the summer load waterline. The after perpendicular is
a vertical line at the intersection of the summer load line and the after side of the rudderpost or sternpost, or
the centerline of the rudder stock if there is no rudderpost or sternpost.

Longitudinals

Fore-and-aft structural shape or structural members attached to the underside of decks, flats, or to the inner
bottom, or on the inboard side of shell plating, in association with widely spaced transverses, in the
longitudinal framing system.

Molded Lines

Lines defining the geometry of a hull as a surface without thickness; structural members are related to
molded lines according to standard practice (unless otherwise shown on drawings). For example, the inside
surface of flush shell plating is on the molded line, also the underside of deck plating.

Nspline

Curves that are composed of one or more segments and have three characteristics: degree, polygon points,
and vectors. The degree of an Nspline is determined by the polynomials that define it. A polygon point
controls the shape of an Nspline. Knot vectors are lists of parameter values that correspond to points on the
Nspline where one polynomial ends and another begins.

Basic Hull

NURBS

Abbreviation for Non-uniform Rational Bspline.

Outboard

Away from the centerline towards the side; outside the hull.

Pillar

Vertical member or column giving support to a deck girder, flat, or similar structure. Also called a
stanchion.

Port Side

The left-hand side of a ship when looking forward. Opposite to starboard

Primary Structure

The main structural shell plating, deck, bulkhead, and the main stiffeners that support the plating, such as
webs, transverses, and girders. Profile intersection of a hull surface by a longitudinal vertical plane along the
centerline of ship. This is the usual representation of ship elevation.

Seam

Fore-and-aft joint of shell plating, deck, and tank top plating, or a lengthwise edge joint of any plating.

Secondary Structure

The plating that does not contribute to the strength of the ship and the plate stiffeners that provide additional
strength to this plating, such as longitudinals and frames.

Sections

A general term referring to structural bars, rolled or extruded in any cross section, such as angles, channels,
bulbs, and T, H, and I beams. Sometimes called profiles. Also, the intersections with the hull of transverse
planes perpendicular to the centerline plane of the ship.

Scantlings

The dimensions of a ship’s frame, girders, plating, etc.

Sheer

The longitudinal curve of the deck in a vertical plane, the usual reference being to the side of the ship. In the
case of a deck having a camber, its centerline sheer may also be given an offset. Due to sheer, the height of
a deck above the baseline is higher at the ends than amidship.

Shell Expansion

A plan showing the seams and butts, thickness and associated welding or riveting of all plates comprising
the shell plating, framing.

Shell Landings

Points on the frames where the edges of shell plates are located.

Starboard Side

The right-hand side of a ship when looking forward. Opposite to port.

Stiffener

An angle, T-bar, channel, or built-up section used to stiffen a plating.

Stringer

A term applied to a fore-and-aft girder running along the side of a ship at the shell and also to the outboard
strake of plating on any deck.

Stem

The extreme forward structure forming the apex of the intersection of the forward end of side shell of a ship.
It is rigidly connected at its lower end to the keel and may be a heavy flat bar or of rounded plate
construction.

Basic Hull

Stern

Toward, at, or near the (rear) end of ship.

Stern frame

Cast or fabricated steel frame to structurally integrate the aft structure by connecting it to the keel plate,
rudderpost, and propeller bossing.

Subdivision

Normally made by bulkheads or watertight floors, primarily for safety at sea if the hull is damaged. It also
divides the ship into tanks for storage of fuel or water.

Transom

The stiffened flat plate that closes the extreme rear of the hull with a square stern ending. The transom shape
increases the deck area and hull volume.

Transverse

A deep structural member supporting longitudinal frames of inner bottom, side shell, or longitudinal deck
beams. At right angles to the fore-and-aft centerline.

Tripping Bracket

Flat bars or plates fitted at various points on deck girders, stiffeners, or beams as reinforcements to prevent
their free flanges from tripping.

Twin Screw Ship

A ship that has two propellers (port and starboard) forming part of its main propulsion system.

Waterline

The line of the water when the ship is afloat; technically, the intersection of any horizontal plane (x-y plane)
with the molded hull form.

Web Frame

A built-up frame to provide extra strength, usually consisting of a web plate, flanged or otherwise stiffened
on its edge, spaced several frame spaces apart, with the smaller, regular frames (longitudinals) in between.

About Creating Bulkhead Surfaces

The Bulkhead functionality provides a ship-specific interface that allows you to create a bulkhead surface in a
single operation. When you complete the definition, you have a single feature that is the bulkhead surface quilt.
This quilt is then used to define the compartment boundary and model structural plates.

Based on the orientation, you can create either a transverse bulkhead or a longitudinal bulkhead. A transverse
bulkhead is oriented in the y-z plane at a frame plane. A longitudinal bulkhead runs along the length of the ship

Using the bulkhead functionality, you can create the following types of bulkheads:

· Planar
· Stepped
· Corrugated
· Swedged

To Create a Planar Bulkhead Surface

In Assembly mode, click Applications > Basic Hull > Create Surf. Select the part on which you want to create
the bulkhead surface then select Bulkhead from the HULL SURFACE menu.

In Part mode, click Applications > Hull Part > Create Surf > Bulkhead.

The Bulkhead dialog box opens.

1. In the Bulkhead Inputs section of the Bulkhead dialog box some of the options may be completed by

Basic Hull

default. Others require you to input specify information. The options are:

- Bulkhead Name—A default name is assigned to the bulkhead, but you can change this name if

necessary.

- Orientation—Select the orientation:

Transverse—Plane parallel to the midship plane.
Longitudinal—Plane parallel to the centerline plane.

- Bulkhead Type—Select Planar. Other options are Swedged, Corrugated, or Stepped. Note: you

cannot change bulkhead type during the redefinition process.

- Bulkhead Plane—Select any existing datum plane as a bulkhead plane. You can select by name or by

selecting geometry on the screen.

- Bulkhead Plane Offset—Specify the value to offset.

2. Click

to access the Extents section.

3. Define the extents of the bulkhead. Multiple surfaces can be selected to specify extents. The options vary

depending on whether you are defining a transverse or longitudinal bulkhead:

- Transverse—Define port, starboard, top, and bottom extents.
- Longitudinal—Define forward, aft, top, and bottom extents.

4. Click

to access the Classification section.

5. A default Class Type is listed. To change the Class Type, select from the list.
6. Based on the Class Type selected, a list of Selecting Classes is provided. Select the class.
7. Click Apply. The Selected Classes area shows your selection. Click Remove to remove any unwanted

classes.

8. Click

to preview the bulkhead surface you have defined.

Click

to create the bulkhead surface.

To Create a Stepped Bulkhead Surface

In Assembly, mode click Applications > Basic Hull > Create Surf. Select the part on which you want to create
the bulkhead surface then select Bulkhead from the HULL SURFACE menu.

In Part mode, click Applications > Hull Part > Create Surf > Bulkhead.

The Bulkhead dialog box opens.

1. In the Bulkhead Inputs section of the Bulkhead dialog box some of the options may be completed by

default. Others require you to input specify information. The options are:

- Bulkhead Name—A default name is assigned to the bulkhead, but you can change this name if

necessary.

- Orientation—Select the orientation.

Transverse—Plane parallel to the midship plane.
Longitudinal—Plane parallel to the centerline plane.

- Bulkhead Type—Select Stepped. Other options are Planar, Swedged, or Corrugated. Note: you cannot

change bulkhead type during the redefinition process.

- Number of Sections—Options are One Section or Two Sections. The default is Two Sections.
- Section1 Plane—If you select One Section, you must specify the plane where the second section will

be positioned.

2. Click

to access the Setup Plane section. The Setup Plane section includes the following

options:

- Sketching Plane—Select a sketching plane, or click Use Previous.
- View Direction—Select Side One or Side Two. An arrow appears on the model to show the direction

chosen.

- Orientation—Determine the orientation: Top, Bottom, Left, Right, or Leave Undefined.

Basic Hull

- Reference—Select a reference to define the bulkhead section.

3. Click

. The standard Pro/ENGINEER sketcher window opens along with a References dialog

box.

4. Select the model references. If a datum plane belonging to the framing system is selected, the reference of

the keel, CL, and AP are autoselected as the references as appropriate. Click Close when you have made
your selections.

5. Provide section sketches at the bulkhead ends. The number of entities in the two sketches must be the same.

The stepped bulkhead surface will be generated by blending the sections at the bulkhead ends, and will then
be trimmed by the extents you specify.
While sketching on a frame plane or an offset from the frame plane, the nearest frame section will be
highlighted.

6. When you have completed the sketches, click done.

7. Click

to access the Extents section.

8. Define the extents of the bulkhead. Multiple surfaces can be selected to specify extents. The options vary

depending on whether you are defining a transverse or longitudinal bulkhead. They are:

- Transverse—Define port, starboard, top, and bottom extents.
- Longitudinal—Define forward, aft, top, and bottom extents.

9. Click

to access the Classification section.

10. A default Class Type is listed. To change the Class Type, select from the list.
11. Based on the Class Type selected, a list of Selecting Classes is provided. Select the class.
12. Click Apply. The Selected Classes area shows your selection. Click Remove to remove any unwanted

classes.

13. Click

to preview the bulkhead surface you have defined.

Click

to create the bulkhead surface.

To Create a Swedged Bulkhead Surface

In Assembly mode, click Applications > Basic Hull > Create Surf. Select the part on which you want to create
the bulkhead surface then select Bulkhead from the HULL SURFACE menu.

In Part mode, click Applications > Hull Part > Create Surf > Bulkhead.

The Bulkhead dialog box opens.

1. In the Bulkhead Inputs section of the Bulkhead dialog box some of the options may be completed by

default. Others require you to input specify information. The options are:

- Bulkhead Name—A default name is assigned to the bulkhead, but you can change this name if

necessary.

- Orientation—Select the orientation.

Transverse—Plane parallel to the midship plane.
Longitudinal—Plane parallel to the centerline plane.

- Bulkhead Type—Select Swedged. Other options are Planar, Corrugated, or Stepped. Note: you cannot

change bulkhead type during the redefinition process.

- Bulkhead Plane—Select any existing datum plane as a bulkhead plane. You can select by name or by

selecting geometry on the screen.

- Note: For a longitudinal corrugated or swedged bulkhead the ship centerline plane is selected as the

bulkhead plane by default. For longitudinal bulkhead user can specify the start and end of corrugation /
swedge from the aft and forward extents.

- Bulkhead Plane Offset—Input the offset value to offset the selected bulkhead definition plane in the

direction shown by the green arrow in the active part.

2. Click

to access the Extents section.

Basic Hull

3. Specify the extents of the bulkhead. Multiple surfaces can be selected to specify extents. The options vary

depending on whether you are defining a transverse or longitudinal bulkhead.

- Transverse—Define port, starboard, top and bottom extents.
- Longitudinal—Define forward, aft, top and bottom extents.

4. Click

to access the Transverse or Longitudinal Swedge Direction section. Represented by

graphical buttons, the options are:
Transverse Swedge Direction

Asymmetrical around the bulkhead plane in a forward direction.

Asymmetrical around the bulkhead plane in an aft direction.

Longitudinal Swedge Direction

Asymmetrical around the bulkhead plane in a port direction.

Asymmetrical around the bulkhead plane in a starboard direction.

5. Click

to access the Trans or Longi Bulkhead Swedge section.

6. Specify the swedge parameters. Each parameter corresponds to measurement illustrated in the graphic that

appears in this section of the dialog box as shown below.
Transverse Swedge Direction

Longitudinal Swedge Direction

7. Click

to access the Classification section.

8. A default Class Type is listed. To change the Class Type, select from the list.
9. Based on the Class Type selected, a list of Selecting Classes is provided. Select the class.
10. Click Apply. The Selected Classes area shows your selection. Click Remove to remove any unwanted

classes.

11. Click

to preview the bulkhead surface you have defined.

Click

to create the bulkhead surface.

Basic Hull

To Create a Corrugated Bulkhead Surface

Corrugated bulkheads stand on the bulkhead stool. The top and bottom bulkhead stools are created as separate
quilts in the same feature when the build command is issued.

In Assembly mode, click Applications > Basic Hull > Create Surf. Select the part on which you want to create
the bulkhead surface then select Bulkhead from the HULL SURFACE menu.

In Part mode, click Applications > Hull Part > Create Surf > Bulkhead.

The Bulkhead dialog box opens.

1. In the Bulkhead Inputs section of the Bulkhead dialog box some of the options may be completed by

default. Others require you to input specify information. The options are:

- Bulkhead Name—A default name is assigned to the bulkhead, but you can change this name if

necessary.

- Orientation—Select the orientation.

Transverse—Plane parallel to the midship plane.
Longitudinal—Plane parallel to the centerline plane.

- Bulkhead Type—Select Corrugated. Other options are Planar, Swedged, or Stepped. Note: you

cannot change bulkhead type during the redefinition process.

- Bulkhead Plane—Select any existing datum plane as a bulkhead plane. You can select by name or by

selecting geometry on the screen.

Note: For a longitudinal corrugated or swedged bulkhead the ship centerline plane is selected as the
bulkhead plane by default. For longitudinal bulkhead user can specify the start and end of corrugation /
swedge from the aft and forward extents.

- Bulkhead Plane Offset—Input the offset value to offset the selected bulkhead definition plane in the

direction shown by the green arrow in the active part.

2. Click

to access the Extents section.

3. Define the extents of the bulkhead. Multiple surfaces can be selected to specify extents. The options vary

depending on whether you are defining a transverse or longitudinal bulkhead. They are:

- Transverse—Define port, starboard, top and bottom extents.
- Longitudinal—Define forward, aft, top and bottom extents.

4. Click

to access the Transverse or Longitudinal Corrugation Direction section. Represented

by graphical buttons, the options are:
Transverse Corrugation Direction

Asymmetrical around the bulkhead plane in a forward direction.

Asymmetrical around the bulkhead plane in an aft direction.

Symmetrical around the bulkhead plane in a forward direction.

Symmetrical around the bulkhead plane in an aft direction.

Longitudinal Corrugation Direction

Asymmetrical around the bulkhead plane in a port direction

Basic Hull

Asymmetrical around the bulkhead plane in a starboard direction.

5. Click

to access the Trans or Longi Bulkhead Corrugation section.

6. Specify the corrugation parameters. Each parameter corresponds to measurement illustrated in the graphic

that appears in this section of the dialog box as shown below.
Trans Bulkhead Corrugation

Longi Bulkhead Corrugation

7. Click

to access the Transverse or Longitude Bulkhead Stool section.

8. Specify the stool parameters. Each parameter corresponds to measurement illustrated in the graphic that

appears in this section of the dialog box as shown below.
Transverse Bulkhead Stool

Longitudinal Bulkhead Stool

9. Click

to access the Classification section.

Basic Hull

classes.

13. Click

to preview the bulkhead and bulkhead stool surfaces you have defined.

Click

to create the bulkhead and bulkhead stool surfaces.

Corrugated Bulkhead Stool Gap

Corrugated bulkheads stand on the bulkhead stool. The top and bottom bulkhead stools are created as separate
quilts in the same feature when the corrugated bulkhead is created.

To allow welding of the stool with the corrugated bulkhead, there must be a small gap between the edge of the
stool top and the flat vertical surface of corrugated bulkhead.

You specify this gap through a configuration option named BULKHEAD_STOOL_GAP. The gap tolerance
must be greater than the part accuracy.

Create Bulkhead Surface Errors

When the selected boundaries specifying the extents of the bulkhead do not form a closed loop you may get the
following error message:

Selected extents do not form a closed loop.

When creating a stepped bulkhead, you may receive an error message for one of the following reasons:

· The number of entities sketched in the two selected sketches must be the same.
· The stepped bulkhead must intersect with one of the bounding surfaces.
· If there is only one bounding surface, you must select the same surface as the top and bottom quilt.

To Redefine a Bulkhead Surface

You cannot change the following items during the redefinition of the bulkhead surface feature:

· Bulkhead type
· Bulkhead orientation
· Number of sections
1. To redefine a bulkhead feature or component, click Applications > Basic Hull > Redefine. When the GET

SELECT menu appears, select the bulkhead surface you want to redefine. The Redefine Bulkhead dialog
box opens.

2. Under Bulkhead Inputs, you can change the following fields:

- Bulkhead Name—A default name is assigned to the bulkhead, but you can change this name if

necessary.

- Bulkhead Plane—Select any existing datum plane as a bulkhead plane. You can select by name or by

selecting geometry on the screen.

- Bulkhead Plane Offset—Input the offset value to offset the selected bulkhead definition plane in the

direction shown by the green arrow in the active part.

3. Click

to access the Extents section.

4. Define the extents of the bulkhead. Multiple surfaces can be selected to specify extents. The options vary

depending on whether you are defining a transverse or longitudinal bulkhead. They are:

- Transverse—Define port, starboard, top and bottom extents.
- Longitudinal—Define forward, aft, top and bottom extents.

5. Click

to access the Classification section.

Basic Hull

6. A default Class Type is listed. To change the Class Type, select from the list.
7. Based on the Class Type selected, a list of Selecting Classes is provided. Select the class.
8. Click Apply. The Selected Classes area shows your selection. Click Remove to remove any unwanted

classes.

9. Click

to preview the bulkhead surface you have redefined.

Click

to redefine the bulkhead surface.

About Creating a Hatch Coaming

A hatch coaming is the vertical plating that bounds a hatch. It can stand exactly on the edge of the hatch
opening or it can be offset. The purpose of a coaming is to stiffen the edges of the opening and to restrict entry
of water to the hold below. The volume enclosed by the coaming is added to the hold volume. Basic Hull allows
you to model the coaming as a surface, which is then used to define the boundary of a compartment and to
create structural plates. You create the hatch opening on the deck to which the coaming is attached as you
define the coaming surface.

You can model a Hatch Coaming by using one of the following methods:

· Sketch the coaming section and specify the height.
· Define the coaming section using existing curves and specify the height.
· Define a standard rectangular hatch coaming using dimensional parameters.

The hatch coaming surface is created on the deck, but the deck geometry remains unchanged (no opening is
created on the deck). The primary objective of modeling the hatch coaming is to account for the volume within
the coaming and to add it to the compartment below. The deck surface is used as reference geometry for
modeling structural plates on the deck. Therefore, when the space within the coaming is excluded during plate
modeling, the opening is visible in the structural model.

Example: Hatch Coamings

A coaming can stand exactly on the edge of the hatch opening or can be offset.

The following figure shows a coaming of height of 80.0 around a hatch opening with outside placement and an
offset of 10.0.

The following figure shows a coaming of height 100.0 around a hatch opening with inside placement and an
offset of 50.0.

Basic Hull

To Create a Hatch Coaming

A coaming surface is created by extruding the hatch opening boundary. By default the coaming surface is
extruded in the global Z direction. However you can specify the direction by defining the plane in the sketching
option.

In Assembly mode, click Applications > Basic Hull > Create Surf. Select the part on which you want to create
the coaming then select Coaming from the HULL SURFACE menu.

In Part mode, click Applications > Hull Part > Create Surf > Coaming.

The Coaming dialog box opens.

1. In the Height section, complete the following fields:

- Coaming Name—A default name is assigned to the coaming, but you can change it and assign a new

one if desired.

- Height—The coaming height corresponds to the highest point of the hatch opening edge selected. The

value is a dimension. You can modify this dimension and regenerate the part.

- Placement—Locate the coaming with respect to the opening. The options are Inside or Outside. These

options are not valid if you choose to define a Standard Opening.

- Offset—The offset value to position the coaming surface relative to the hatch opening edge. By default

the offset value is zero when the surface stands exactly on the edge of the opening. The Offset element
is not valid if you choose to define a Standard Opening.

- Quilt—Select the quilt on which the coaming will be created. This input is required for Sketch and

Standard Opening options.

Note: You can modify the coaming height or the offset by modifying the respective parameter value.

- Selection Options—Choose one of three different ways to create an opening:

Sketch Opening to sketch the hatch opening.
Select Opening to define the coaming by selecting the hatch boundary edge or curve.
Standard Opening to define a standard hatch by specifying the parameters.

- Create Hatch Opening—Select Yes if you want to create the hatch opening at the same time you

create the coaming. Select No if you want to create only the coaming.

2. Click

. Depending on the Selection Option you chose, follow one of these procedures to define

the opening.
To Sketch an Opening:

a. In

the

Setup Plane section, select the Sketching Plane and determine the View Direction.

b. Determine the Orientation.

c. Click

. The sketching window opens. Sketch the opening. Sketch the hatch opening using

Basic Hull

the Standard Sketcher menu of Pro/ENGINEER. When you have completed your sketch click Done.

To Select an Opening:

a. Using the standard GET SELECT and CHAIN menus, select a chain of edges or datum curves

representing the hatch opening around which to create the coaming.

b. Click Done Sel.

To Define a Standard Opening:
Specify the position of the hatch coaming with respect to ship frames and distance of the sides of the
coaming from the ship centerline by filling in the following fields:

- Port Side—The distance of the coaming side from the ship centerline (on the port side).
- Starboard Side—The distance of the coaming side from the ship centerline (on the starboard side).
- Forward Frame—The frame location as a reference for the coaming location.
- Distance from Frame—The distance of the coaming forward/aft of the frame location.
- Aft Frame—The frame location as a reference for the coaming location.
- Fillet Radius1 & Fillet Radius2—The elliptical fillet radius for the hatch opening.

Note: Fillet Radius1 = Fillet Radius2 creates a round fillet.

3. Click

to create a coaming surface around the hatch opening.

On execution of the build command, a single quilt is created as a new feature. The hatch opening is created on
the deck to which the coaming is attached.

The coaming height and the offset from the edge are modifiable parameters. If you use the sketching option, the
sketch dimensions are also modifiable parameters.

Coaming Parameters

The following diagram shows the coaming parameters required to specify the position when creating a standard
opening.

Distance from aft frame

Distance from forward frame

Aft frame reference

Forward frame reference

Port extent

Starboard extent

Basic Hull

To Modify a Hatch Coaming

You can use the standard Redefine and Reroute commands to change a hatch coaming. The surface behaves
parametrically. If the edges/datum curves are changed, the hatch coaming surface updates automatically.

You can use the Modify command to change any of the dimensional parameters such as coaming height, offset
from edge, distance from frame, port and starboard extents.

If you use the sketching option, the sketch dimensions are also modifiable parameters.

About Creating Deck Surfaces

After the framing system is defined and the hull surface created, you can create the deck surfaces that form the
internal subdivisions.

A deck can be flat or can have sheer and camber. The sheer can be linear or parabolic. The camber can be
parabolic, arched, or linear. The deck can extend along the complete length of the ship or can be bounded by
bulkheads or compartments. Basic Hull lets you model a deck with sheer and camber in a single operation.

The information you must enter to create a deck varies with the type of deck. You can create a deck surface that
is either flat or with defined sheer and camber at a given height between the specified Forward/Aft and
Port/Starboard extents. For example, if you create a deck that bounds a bulkhead, the extents of the deck are
identified as bounding planes or surfaces.

Upon execution, a single feature that makes up the deck quilt is created. Each deck quilt defined has a name a
unique name.

To Create a Deck Surface

Use the following procedure to create a new feature consisting of a single quilt that represents the deck. The
quilt is used to define the compartment boundary and model structural plates.

In Assembly mode click Applications > Basic Hull > Create Surf. Select the part on which you want to create
the deck surface, and then select Deck from the HULL SURFACE menu.

In Part mode click Applications > Hull Part > Create Surf > Deck.

The Deck dialog box opens.

1. In the Height Reference Plane section, some of the fields are completed by default. The elements are:

- Deck Name—A name is assigned to the deck surface (quilt) by default. You can change the name if

you desire. The name should be unique to all other surfaces in the model.

- Height Reference Plane—Select the reference datum plane or flat surface to which the deck height is

specified (the keel or another deck, for example). If the Framing System feature is in the active model,
the default reference is set to the keel datum plane.

- Height Value—Specify deck height with reference to an existing datum plane or planar surface

(another deck) at midship and at the centerline of the ship. The height must be a parametric dimension
in the 3D model. You can modify this dimension using Feature > Modify > Dimension.

- Hull Quilt—Select the hull quilt in order to get the default extents of the deck. The hull quilt is

selected automatically if there is a framing system feature within the active part.

2. Click

to access the Extent section of the Deck dialog box. In addition to hull quilt, the deck can

be bounded by existing surfaces or datums. You can select a set of bounding surfaces to specify the deck
extents. These selections are optional:

- Forward
- Aft
- Port
- Starboard

Basic Hull

3. Click

to access the Forward Sheer Type section. Select the appropriate option in the following

fields:

- Forward Sheer Type—Select from the options No Sheer, Parabolic, or Linear.
- Aft Sheer Type—Select from the options No Sheer, Parabolic, or Linear.
- Camber Type—Select from the options No Camber, Parabolic, Linear, or Arc.
- Length Between Perpendiculars—If the Forward Sheer Type is Parabolic or Linear, you must specify

LBP. The LBP value is derived from the framing system feature. If there is no framing system present,
the default value is read from the config.pro file. The length between perpendiculars is displayed as a
parametric dimension in the 3D model. You can modify this dimension using Feature > Modify >
Dimension.

4. If the deck has sheer, you must define the values and references for both the forward and aft portions of the

deck. If the deck has no sheer, proceed to the Classification section.

Click

to access the appropriate section of the Deck dialog box.

5. In the Forward Sheer and Aft Sheer sections specify the sheer parameters. Each parameter corresponds to

measurement illustrated in the graphic that appears in this section of the dialog box as shown below.
Forward Sheer

Aft Sheer

- Sheer Height—Specify the sheer height. The sheer height is a parametric dimension in the 3D model.

You can modify this dimension using Feature > Modify > Dimension.

- Reference Plane—Select the reference plane.
- Offset—Type the offset value. The deck may have sheer only within a certain extent. In this case, the

beginning of the sheer is specified by a distance value from a selected reference along the length of the
ship.

6. In the Camber section specify the following parameters. Each parameter corresponds to measurement

illustrated in the illustration that appears in this section of the dialog box as shown here.

Basic Hull

- Camber Height—Specify the camber height.
- Flat of Crown—Specify the flat of crown value, which is distributed symmetrically about the ship

centerline. The flat of crown dimension is a parametric in the 3-D model.

- Hull Breadth—The hull breadth value is read from the config.pro file. If no default value is specified

in config.pro, the system takes the maximum breadth of the hull quilt as the default value. The hull
breadth is a parametric dimension in the 3-D model.

Note: To modify the flat of crown and hull breadth dimensions use Feature > Modify > Dimension.

7. Click

to access the Classification section.

8. Under Class Types, a default type will appear based on your Classification Specification File. You can

change this type if you desire.

9. Under Selecting Classes select the classes that apply to the deck you are creating.
10. Click Apply and the classes will appear under Selected Classes.

11. Click

to build the single quilt feature that represents the deck.

Note: If the deck is constructed at centerline (based on the sheer and the deck height definitions), the camber
section is swept along the deck profile at centerline. The resulting surface is then trimmed with the bounding
surfaces to obtain the deck surface.

About the Pro/ENGINEER Shipbuilding Solution

The Pro/ENGINEER Shipbuilding Solution is a complete suite of applications from concept through
production. It is a feature-based, parametric, associative, 3-D solid modeling application that includes hull
design functionality for the conceptual subdivision of a ship, structural steelwork design, and piece part and
manufacturing block fabrication outputs. The outfitting functionality provides for specification driven piping,
parametric and associative routed systems, and cabling/piping supports design.

The Hull shipbuilding components are Basic Hull and Structural Hull. Both modules have a ship-specific user
interface that uses standard ship design terminology and reference systems. The dialog boxes contain ship-
specific measurements and values.

About Basic Hull

The Basic Hull design capabilities include:

· Generating the hull form from an offset table or from an existing design.
· Carrying out the local fairing of lines.
· Defining the internal subdivisions in terms of web and frame spacing, deck and bulkhead locations based on

the function of the ship.

· Defining landings of longitudinals, transverses, webs, girders, and floors as per the classification rules.
· Defining seams and butts showing elemental plate boundaries on shell, decks, and bulkheads.

In Basic Hull, the ship model is topological, and is made up of lines and surfaces defined parametrically,
without showing plate thickness, and stiffener cross-sections.

About Structural Hull

In Structural Hull you generate a detail structural model of the ship by identifying all the structural objects in
terms of their geometry, properties, and how they are connected. The Structural Hull design capabilities include:

· Defining plates with respect to their boundary seams, butts, and molded surfaces.
· Defining main stiffeners along the landings and attaching them to plates.
· Defining the holes, cutouts, and notches on the plates and stiffeners for passage, routing of pipes and cables,

and drainage.

· Defining pillars, flanges, brackets, and collars and attaching them to the main structural objects that extend

over a number of panels.

· Building up the structural model of each panel by assembling a standard set of plates, stiffeners, brackets,

Basic Hull

pillars, and other required structural objects.

· Breaking down the complete ship model in terms of blocks, assembly, sub-assembly, and panels to suit

fabrication and erection facilities of the shipyard.

· Checking for continuity of the structural objects that extend over a number of panels and blocks.
· Checking for interference among structural objects and between structural objects and pipes, ducts, and

cables.

After the detail ship design is completed, you can generate manufacturing information and drawings as
required. In Structural Hull you can generate:

· Plate development drawings with edges adjusted for cutting, welding, and shrinkage allowance. The

drawings can also include roll lines for curved plates, frame, waterline and buttock markings, panel opening
markings, edge preparation markings, plates orientation markings, holes, cutouts, and other datum lines.

· Stiffener drawings that include developed edge with adjustments for cutting and welding, endcuts, cutouts,

and notches, bending information, and the direction of the stiffener with respect to the ship axis. When the
stiffener is twisted or curved, a linear representation of the stiffener is shown along with inverse bending
curve values.

· Production drawings for all structural objects in the panels, assemblies, and blocks.
· Shell expansion drawings that are the developed two-dimensional representation of the hull form where the

expansion is carried out only in the vertical direction, that is, along the z-axis.

About the User Interface

The Pro/ENGINEER Shipbuilding Solution user interface follows the conventions of the shipbuilding industry
and supports the workflow of ship design and building processes. The terminology used in the menus and dialog
boxes reflects the language used in shipbuilding and integrates with the standard Pro/ENGINEER user interface
for specific shipbuilding functionality.

Basic Hull and Structural Hull are the shipbuilding applications. These applications are accessible using the
Applications menu on the Pro/ENGINEER top menu bar.

In Assembly Mode

You can access either Basic Hull or Structural Hull from the Applications menu.

In Part Mode

You can access only Basic Hull from the Applications menu.

Basic Hull Menu Options

The BASIC HULL and HULL PART menus contain hull-specific commands for creating ship internal
surfaces and defining and modifying ship compartments:

· Create Surf—Creates surfaces such as decks, bulkheads, and coamings (using the HULL SURFACE

menu).

· Compartment (available in Assembly mode only)—Creates a compartment using the Compartment

dialog box. This command is available only if the active assembly has a skeleton part containing a hull quilt
and framing system.

· Mod Compart (available in Assembly mode only)—Adds or removes volume to or from an existing

compartment from within the Compartment dialog box. This command is available only when the active
assembly has a compartment.

· Modify—Modifies assembly or component dimensions and features (using the ASSEM MOD and

MODIFY menus).

· Simplfd Rep—Allows you to create a simplified representation of an assembly by controlling which

members of an assembly the system brings into session and displays.

· Regenerate—Updates modified part and assembly dimensions (using the PRT TO REGEN menu).

Basic Hull

· Relations—Edits parametric labels, and adds or edits constraint equations.
· Set Up—Assigns assembly mass properties, and specifies length units, mass units, dimension bounds, and

other setup properties (using the ASSEM SETUP menu). Hull-specific options include:

- Class—Assigns a class to a ship specific object.
- BMT to Pts—Generates a .pts file from a BMT offset file (using the PART SETUP menu).
- Framing Sys—Creates the ship framing system (using the PART SETUP menu). This command is

available only when a skeleton part is active.

· Copy—Launches the command to copy structural objects (using the COPY FEATURE menu). Using this

command it is possible to select a structural component belonging to the assembly or a hull structural
feature contained in any of its components.

· Delete—Removes a selected component, component part, or any feature in the assembly from the assembly.
· Redefine—Redefines any feature in the assembly.
· Reorder—Reorders any feature in the assembly.
· Reroute—Reroutes any feature or component part in the assembly (using the REROUTE REFS menu).

Basic Hull Shortcut Menus

In Part mode, you can select any ship design feature and right-click for a shortcut menu that contains these
commands:

· Rehighlight
· Delete
· Suppress
· Modify
· Reroute
· Note Create
· Info
· Next
· Previous
· Close Sel Bin
· Unselect Las

In Assembly mode, you can select any ship design feature and right-click for a shortcut menu that contains
these options:

· Rehighlight
· Open
· Delete
· Suppress
· Modify
· Replace
· Ref Control
· Feature Create
· Note Create
· Info
· Next
· Previous
· Select Parent
· Show Sel Bin
· Unselect Last

Basic Hull

Hull Dialog Boxes

The dialog boxes in Basic and Structural Hull are designed so that components or elements of the ship design,
such as bulkheads or the framing system, can be defined in a single operation. To accomplish this, the Hull
dialog boxes are divided into a series of sections that you access by clicking the Back or Next buttons located at
the bottom of the dialog box.

You can collapse or display each section of a dialog box by clicking the arrowhead on the left side of the
section title bar. The top section in the Hull dialog boxes is the Tree. The Tree section contains the Feature
Element Tree.

To find out information about the features in your model, the Hull dialog box includes a top level menu bar with
three menus: Feature, Element, and Tree.

Feature Element Tree

The Feature Element Tree is an assembly tree structure that displays the design elements of a ship. You can
expand or collapse each section of the tree by clicking the plus (+) or minus (–) signs in the tree assembly.

When you open a Hull dialog box, the Feature Element Tree is expanded to the element you are defining. You
can select the features to define by clicking on the element in the tree, or by positioning the cursor in the
corresponding field in the dialog box. As you define features, they are added to the Feature Element Tree along
with the corresponding data.

A red arrow points to the active, or selected, feature in the Feature Element Tree.

Dialog Box Buttons

Hull dialog boxes include a set of buttons at the bottom that allow you to move through the dialog box sections
and execute your commands.

Click

to return to a previous section of the dialog box.

Click

to move to the next section of the dialog box.

Click

to apply the specified commands, execute the action, and close the dialog box.

Click

to apply the specified commands, execute the action, and keep the dialog box open for further

selections.

Click

to preview the feature or part before it is created.

Click

to cancel the action and close the dialog box.

In addition, some dialog boxes, such as the Framing System dialog box, include Plus and Minus buttons that
allow you to add or remove a selected feature from a list.

Create Deck Surface Errors

When the selected boundaries specifying the extents of the deck do not form a closed loop you receive the
following error message:

Selected extents do not form a closed loop

The command typically waits for you to quit or resolve the error.

Basic Hull

About Classification Codes

Classification codes attach application specific classification information to the feature and datum entity created
in the corresponding application modeling tasks. Using Classification codes you can label a generic feature or
datum entity (one that is not application specific) as an application entity. This entity can then be selected and
referenced by the application modeling function, and will have the appropriate classification information
attached while it is being created.

You can assign shipbuilding-specific attributes to a feature or datum entity to identify its application type or
class using a utility called Class. These attributes drive the view state characteristics (color, font, label) of these
entities.

Classification Code Information

· Application class creation—A feature or datum entity can be classified as an object of a pre-defined class.
· Entity filter and selection—A specific class of feature or datum entity can be selected. In particular, this is

useful for application specific modeling functions because it simplifies the user interface in identifying the
reference entities to be used in modeling tasks.

· Sub-class—A class can have sub-classes. For example, a layer can have a sub-layer.
· Inclusive class—An entity can belong to more than one class. For example, a datum entity can be grouped

in more than one layer.

· Exclusive class—Classes can be mutually exclusive from each other. That is, an entity cannot be in two

classes that are mutually exclusively from each other. For example, a deck surface cannot also be a
bulkhead surface.

· Class value—Each class has a value that is stored as part of the classification information. For example, a

class can have a value type of flag, integer, double, or text.

· User-definable class name—Class names can be customized or translated because only the class code is

referenced and stored in the model.

· User-definable class—New classes and sub-classes, other than the standard ones, can be user-defined.

About the Classification Description File

When the Classification dialog box is activated, the tree structure as defined in the Classification Description
File (CDF) is read into the TreeTool structure in memory, and the pre-defined classification tree structure
displays in the Classification dialog box.

You can attach or detach features and geometry entities to or from the selected node in the classification tree,
but you cannot modify the overall classification tree structure. That is, the class node cannot be added or
removed from the tree. As the classification information is being assigned or deassigned on the features and
geometry entities in memory, the class tree of the "in session" entities (in memory) are maintained in memory.

When File > Save is selected, the classification information is read from the classification tree in memory and
stored in the affected parts (.prt files) or assemblies (.asm files) where the updated features or geometry
entities reside.

As the part or assembly is activated and loaded in memory, the classification information of the entities is read
and the classification tree in memory is updated accordingly.

Classification Description File (CDF) Format

The format for the Classification Description File is as follows:

Field Name

Field Description

Class

A unique class name.

Parent Class

The name of the parent class.

Basic Hull

Exclusive Group

The name of an exclusive group. Classes that belong to the same
exclusive group are mutually exclusive from each other. However,
classes that share the same parent but belong to different exclusive
groups can be assigned to the same object.
Example: A structural surface can be a Hull, Deck, Bulkhead,
Bulkhead Stool, Floor, Girder, or Coaming class exclusively. But a
bulkhead surface can belong to class Longitudinal Bulkhead, Planar
Bulkhead, and Watertight at the same time.

Data Type

The data type of the class value, if any. Valid data types are flag,
int, double

, or text.

Description

The descriptive text regarding the class. It can be used for reporting
and for drawing generation.

Classification Identification Definitions

Classifications are set up by default. You cannot change the semantics of these system definitions in the CDF.
However, you can rename or translate the class name and the description.

The top level of the hierarchy has root as the superclass. You cannot change or translate the name of this
superclass.

Class

Parent Class

Exclusive Group

Data
Type

Description

Structure

Root

Flag

Structural reference datum
entity

Surface

Structure

Flag

Structural reference datum
surface

Curve

Structure

Flag

Structural reference datum
curve

Hull

Surface

Structural Surface

Flag

Hull form quilt

Deck

Surface

Structural Surface

Flag

Deck datum surface

Main_Deck

Deck

Flag

Main deck datum surface

Tank_Top

Deck

Flag

Tank top or inner bottom
datum surface

Poop_Deck

Deck

Flag

Deck datum surface for
structure stands on the main
deck, near the stem

Forecastle

Deck

Flag

Deck datum surface for
structure stands on the main
deck, near the stern

Tween Deck

Deck

Flag

Deck datum surface between
main and bottom deck

Intermediate Deck

Deck

Flag

Deck datum surface between
main and bottom deck

Stringer

Deck

Flag

Small deck datum surface that
is attached to one side of the
hull

Gunwale

Deck

Flag

A chamfer datum surface
between the deck surface and
hull quilt

Super Structure

Deck

Flag

Deck datum surface of super

Basic Hull

Deck

structure that stands on the
main deck

Bulkhead

Surface

Structural Surface

Flag

Bulkhead datum surface

Longitudinal
Bulkhead

Bulkhead

Primary Bulkhead

Flag

Longitudinal bulkhead datum
surface

Transverse
Bulkhead

Bulkhead

Primary Bulkhead

Flag

Transverse bulkhead datum
surface

Planar Bulkhead

Bulkhead

Bulkhead Shape

Flag

Planar bulkhead datum surface

Corrugated
Bulkhead

Bulkhead

Bulkhead Shape

Flag

Corrugated bulkhead datum
surface

Swedge Bulkhead

Bulkhead

Bulkhead Shape

Flag

Swedge bulkhead datum
surface

Swash

Bulkhead

Bulkhead Subclass

Flag

Swash bulkhead

Non-watertight

Bulkhead

Bulkhead Subclass

Flag

Non-watertight bulkhead

Watertight

Bulkhead

Bulkhead Subclass

Flag

Watertight Swash bulkhead

Oiltight

Bulkhead

Bulkhead Subclass

Flag

Oiltight bulkhead

Gastight

Bulkhead

Bulkhead Subclass

Flag

Gastight bulkhead

Wing Tank

Longitudinal
Bulkhead

Flag

Wing tank datum surface

Hopper Tank

Longitudinal
Bulkhead

Flag

Hopper tank datum surface

Bulkhead Stool

Surface

Structural Surface

Flag

Floor

Surface

Structural Surface

Flag

Girder

Surface

Structural Surface

Flag

Coaming

Surface

Structural Surface

Flag

Butt

Curve

Structural Curve

Flag

Butt datum curve

Seam

Curve

Structural Curve

Flag

Seam datum curve

Block Seam

Curve

Structural Curve

Flag

Block seam datum curve

Stiffener Landing

Curve

Structural Curve

Flag

Stiffener landing datum curve

Frame Landing

Curve

Structural Curve

Flag

Frame landing curve on hull
form quilt

Knuckle

Curve

Structural Curve

Flag

Knuckle datum curve

Opening

Curve

Structural Curve

Flag

Opening datum curve

Marking

Curve

Structural Curve

Flag

Marking datum curve

Deck Intersection

Curve

Structural Curve

Flag

Deck intersection datum curve

Plate Boundary

Curve

Structural Curve

Flag

Plate boundary datum curve

Weld Notch

Curve

Structural Curve

Flag

Weld notch boundary datum
curve on a structural object on
which a butt or seam intersects

Hatch

Opening

Flag

Hatch opening datum curve

Door

Opening

Flag

Door opening datum curve

Hole

Marking

Flag

Hole marking datum curve

Nonpenetration

Penetration

Flag

Nonpenetration structural
object

Penetrator

Penetration

String

Penetration

String

Penetration class of cutter

Basic Hull

To Assign Classification Information

Most of the classification information is assigned based on the Classification Description File. However, you
can change or assign new classification information.

Use the following procedure to assign the classification information to a feature or datum entity.

1. Do one of the following:

- In Assembly mode click Applications > Basic Hull > Set Up > Class.
- In Part mode, click Applications > Hull Part > Set Up > Class.

2. The Classification dialog box opens. Select an object to which you want to assign a classification. The

name of the selected object appears in the information window.

3. If a classification description file exists, the information in Selectable Class Types is filled in.
4. Under Selectable Classes select the classification you want to assign to the object. If the class has a

subclass, the

buttons are activated.

5. Click Apply to assign the classification characteristics. Under Selected Classes the Class Name and Class

Value (if one has been specified) display.

6. If a user-specified Class Value is required, enter the value in the input panel.
7. If the entity does not have an assigned name, a default Object Name is provided. You can change this name

but the name must be unique within the active model.

8. Click OK.

To Remove Classification Information

Use the following procedure to remove a feature or datum entity from the related class.

1. Do one of the following:

- In Assembly mode click Applications > Basic Hull > Set Up > Class.
- In Part mode, click Applications > Hull Part > Set Up > Class.

2. In the Classification dialog box, select an object from which you want to remove classification.
3. If a classification description file exists, the information in Selectable Class Types and Selectable Classes

is filled in.

4. Click Remove to delete the classification characteristics.
5. Click OK.

About Curve Font and Color Assignment

You can display curves in a specified font and color based on the Classification code assigned to it. For each
curve that has an assigned classification code, use Pro/TABLE to create the specification file that specifies the
font and color. The assigned specifications are saved in a specification file Curve_Font_Color_Table, which can
be edited. The font and color of a curve is read from the file only if the curve has an assigned classification
code. Any subsequent modification in the file Curve_Font_Color_Table does not affect the curve’s appearance.

Use the following configuration option if you want to assign font and color specifications:

Hull_Crv_Font_Color_File <filename>

If no specification file is selected via the configuration option, the default curve appearance is retained. The
default font and color is also retained if the font or color that corresponds to the specified classification code has
not been specified in the selected specification file.

Removing a classification code from a curve or modifying the specification file does not update the appearance
of a curve. To do that, you must either re-assign the class or set the font and color interactively.

To Assign the Font and Color of a Curve

1. Click View > Display Settings > Hull Curve Font. The Curve Color Font Setting dialog box opens.

Basic Hull

2. The name of the .ptd file appears in the information window. To chose a different .ptd file, click

and select the file you want.

3. Specify a font or color setting for each curve.
4. Save your settings to a .ptd file:

- Click

to save to the current setting file.

- Click

to save the settings to a new file.

5. The settings have been save to the file, but you must apply them to your model. Do one of the following:

Click OK to apply the settings and close the dialog box.
Click Preview to show the changes.
Click Apply to apply the settings and keep the dialog box open.
Click Cancel to ignore the changes and exit the dialog box.

The class font and color setup is saved to the file named in the Hull_Crv_Font_Color_File
configuration option setting.

Changing the Font and Color of a Curve

You can change the font and color of a curve in one of three ways:

· Edit the specification (.ptd) file before you enter Pro/ENGINEER.
· Edit the .ptd file using the standard Curve Color Font Setting dialog box.
· Enter Pro/ENGINEER, edit the .ptd file, then reload it.

About Naming Conventions

When you attach classification information to a curve, composite curve, surface, or quilt, you can name the
entity if a name does not exist. If a name does exist, the system provides a default name, based on the
classification information of the entity. The prefix for the default name is extracted from the configuration
option according to the selected class of the object.

After the classification information is set properly for the selected surface or curve, either the existing name or a
default name is displayed in the Object Name panel in the Classification dialog box.

The following table shows the Classification names and associated configuration options.

Classification

Configuration Option

BUTT

SHIP_BUTT_PREFIX

COAMING

SHIP_COAMING_PREFIX

DECK

SHIP_DECK_PREFIX

FRAME

SHIP_FRAME_PREFIX

FRAME LANDING

SHIP_FRAME_LANDING_PREFIX

LONGITUDINAL BULKHEAD

SHIP_LONG_BULKHEAD_PREFIX

SEAM

SHIP_SEAM_PREFIX

TRANSVERSE BULKHEAD

SHIP_TRANS_BULKHEAD_PREFIX

To Assign a Name to a Surface or Curve Entity

Use the following procedure to assign a name to a surface, quilt, curve, or composite curve.

1. Do one of the following:

- In Assembly, mode click Applications > Basic Hull > Set Up > Class.
- In Part mode, select Applications > Hull Part > Set Up > Class.

2. In the Classification dialog box select an object to which you want to assign a name.
3. If the selected object has no name, a default Object Name is provided. Enter the desired name.
4. Click OK.

Basic Hull

Note: The name must be unique within the active model.

About Importing and Verifying the Hull Data

In Basic Hull you begin the ship design process by creating a hull surface from imported curve surface data.
Communicating curve surface data to Pro/ENGINEER is a vital part of the ship design cycle. Some data
translation issues can be addressed during the basic hull design on the source system. However, checking the
imported data will significantly impact the ease with which the surface is created and the amount of time spent
creating it.

Before your check the imported data, you must convert it to a Pro/ENGINEER offset table (.pts) file. The offset
table is a set of points created at the intersections of the ship stations, frames, waterlines, buttock lines, contour
lines and tangent lines. You can then compare this file to the Pro/ENGINEER hull surface. The deviation
between the offset tables and the imported hull surface is a critical measure of the accuracy of the
Pro/ENGINEER hull surface to the intended surface.

Check and interrogate the imported hull information for any errors or discontinuities in the data. Identify any
topology and discontinuities between the information within the source system and the information received
into Pro/ENGINEER. In some cases it may be possible to make corrections within the source system and then
retransfer the data into Pro/ENGINEER.

Basic Hull

Index

Basic Hull...................................... 37, 38, 39

Accessing.............................................. 37
Dialog Boxes ......................................... 39
Menu Options........................................ 37
Shortcut Menus ..................................... 38
User Interface........................................ 39

BMT File ....................................... 15, 16, 17

BMT to PTS Conversion Points ............ 16
Converting BMT data ............................ 15
Converting to Pts................................... 17

Bulkhead Stool.............................. 28, 29, 30

Configuration option .............................. 30
Creating ................................................ 28
Gap tolerance........................................ 30

Bulkheads ......................... 24, 25, 26, 28, 30

Creating

corrugated ......................................... 28
planar ................................................ 24
stepped.............................................. 26
swedged ............................................ 26

Errors .................................................... 30
Overview ............................................... 24
Redefining ............................................. 30

Classification .......................... 40, 41, 43, 44

Assigning a name.................................. 44
Codes.................................................... 40
Definitions ............................................. 41
Description File ..................................... 40
Description File Format ......................... 40
Naming Conventions............................. 44

Classification

Assigning Classification Information ..... 43
Removing Classification Information ..... 43

Coamings ............................... 31, 32, 33, 34

Creating ................................................ 32
Modifying a hatch coaming ................... 34
Modifying height or offset ...................... 32
Overview ............................................... 31
Parameters............................................ 33

Compartment Specification File................ 12

Creating ................................................ 12

Compartments .................................... 11, 12

Adding or Removing volume ................. 12
Creating ................................................ 11
Errors .................................................... 12
Modifying............................................... 12

Redefining ............................................. 12

Curve Color......................................... 43, 44

Changing............................................... 44
Overview ............................................... 43
Specification File ................................... 43

Curve Color

Assigning............................................... 43

Curve Font .......................................... 43, 44

Assigning............................................... 43
Changing............................................... 44
Overview ............................................... 43
Specification File ................................... 43

Decks.................................................. 34, 39

Creating................................................. 36
Errors .................................................... 39
Overview ............................................... 34

Frame Spacing Table ......................... 7, 8, 9

Creating................................................... 9
Errors ...................................................... 9
Frame Spacing Data ............................... 7
Loading a frame spacing table ................ 7
Modifying an entry ................................... 8

Framing System...................................... 7, 8

Creating................................................... 7
Defining the frame spacing...................... 7
Frame Spacing Data ............................... 7
Overview ................................................. 7

Hull Data ............................................. 17, 45

Converting BMT data ............................ 17
Importing ............................................... 45
Verifying ................................................ 45

Hull Design ............................................... 36

Basic Hull .............................................. 36
Structural Hull.................................. 36, 37

Hull Surface .............................................. 18

Comparing to an Offset File .................. 18

PTS Pro/ENGINEER Points Files ............. 16

BMT to PTS Conversion Points............. 16
Output format ........................................ 16

Ship Reference System ............................ 10

Basic Hull

Creating a coordinate system ............... 10
Creating a datum point.......................... 10
Overview ............................................... 10
Referencing to Create a Feature........... 10

Tank Tables ........................................ 18, 19

Configuration option .............................. 19
Generating a Report.............................. 19
Overview ............................................... 18
Report Parameters ................................ 19
Report Structure .................................... 18

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