IW 1

IB	Positions, Distances, Directions, Compass
PA	Position approximate	IB 7
PD	Position doubtful	IB 8
N	North	IB 9
E	East	IB 10
S	South	IB 11
W	West	IB 12
NE	Northeast	IB 13
SE	Southeast	IB 14
NW	Northwest	IB 15
SW	Southwest	IB 16
km	Kilometre(s)	IB 40
m	Metre(s)	IB 41
dm	Decimetre(s)	IB 42
cm	Centimetre(s)	IB 43
mm	Millimetre(s)	IB 44
M	International Nautical Mile(s), Sea mile(s)	IB 45
ft	Foot/feet	IB 47
h	Hour	IB 49
m, min	Minute(s) ot time	IB 50
s, sec	Second(s) ot time	IB 51
kn	Knot(s)	IB 52
t	Ton(s) tonnes	IB 53
cd	Candela	IB 54

ID	Cultural Features
Ru	Ruin	ID 8

International Abbreviations iw

IK	Rocks, Wrecks, Obstructions
Br	Breakers	IK 17
Wk	Wreck	IK 20-30
Obstn	Obstruction	IK 40-43

IL	Offshore Installations, Submarine Cables, Submarine Pipelines
Fla	Flarę staok (at sea)	IL 11
Prod. Weil	Submerged Production Weil	IL 20
IM	Tracks, Routes
Ra	Radar	IM 31
DW	Deep Water	IM 27
IN	Areas, Limits
No	Number	IN 12.2
DW	Deep Water	IN 12.4

10

Hydrographic Terms

SMt Seamount

10 33

IE	Ports
Lndg	Landing for boats	IF 17
RoRo	Roll-on, Roll-off Ferry Terminal	IF 50

! ‘ Depths
ED	Existence doubtful	II 1
SD	Sounding of doubtful depth	II 2

69