Cd.33 Stability I

BASIC

1. What is the name of the point wich large ship trim about?

• LCF (Longitudinal Centre of Flotation)

2. Click and drag the different abbreviations to their corresponding boxes:

3. Click and drag the different terms and abbreviations to their corresponding boxes:

4. Click and drag the different terms to their corresponding boxes:

TRANSVERSE STABILITY

1. This is a typical GZ curve, for a ship in one certain condition. Read out the correct GZ value if the ship heels at an angle of 30deg. Answer by clicking on the right value in the figure.

• At 30deg the GZ value is 0.95 meters. The value is read out on the vertical axis.

2. What is the minimum required GM value?

• 0,015meters

3. Which one of the following factors does not reduce the effect of free surface?

• GZmax at minimum 25deg

LONGITUDINAL STABILITY

1. What is the formula for calculating the trimming moment, when moving a mass?

• Mass moved x the distance it's moved.

2. Where is the draught largest when the ship has an aft trim?

• Aft

3. This is a typical loading scale, for one certain ship. Read out the correct MCT value for this ship at the draught 17,3meters. Answer by clicking on the right value in the loading scale.

- At draught 17,3meters, the MCT value is 2960 tonnmeters per cm.

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