Sample 2

The combination of a force applied at a distance is called a:

• Lever

• Heel

• Moment

• Righting Lever

In the course of a voyage, a vessel is passing from salt water to fresh water. What would be the effect?

• It would increase the trim by the stern

• It would increase the trim by the head

• It would decrease the draft

• It would increase the draft

What would the ship’s stability condition be if the ship, inclined to a small angel of heel, tends to heel over even further:

• The ship would have excessive stability

• The ship would be in a condition of neutral equilibrium

• The ship would be in a condition of unstable equilibrium

• The ship would have positive GM

What would be the proper way to correct unstable or neutral equilibrium?

• Weights already in the ship could be lowered

• Weights could be loaded below the center of gravity in the ship

• Free surface within the ship could be removed

• All of the above

In vessel’s stability, a righting moment is?

• A measure of a vessel’s ability to stay in a stable condition

• A measure of a vessel’s ability to return to her initial position

• A measure of the vessels ability to stay listed

• None of the above

What is the danger of excessive stern trim?

• The vessel’s bow would ride higher in the water and helm control would be lost

• The planeing of the vessel would usually cause structural damage

• It can affect the transverse stability and the GZ could be jeopardized

• The steering gear compartment could become flooded and the autopilot may not work properly

When a ship has a comparatively large GM, the righting moments at small angles of heel will also be comparatively large:

• When inclined she will tend to return more slowly to the initial position

• When inclined she will tend to return more quickly to the initial position

• When inclined she will tend to stay in this position

• When inclined she will tend to be in a condition of unstable equilibrium

When conducting a rolling test to determine ship stability, a complete oscillation is

• From one side to the other extreme side

• From one side to the other extreme side and return to the amidships position

• From one side to the other extreme side and return to the original starting point

• From one side to amidships position

A proper way to correct a negative GM would be?

• . De-ballasting from low tanks

• Loading cargo on deck

• Discharging half of the fresh water tanks

• Taking ballast in low tanks

A ship with an initial negative GM may take up an angle of loll at this position?

• Because there is no GZ righting lever, the vessel may flop from side to side

• Because there is not GZ righting lever, the vessel may return to its original position

• Because there is no GZ righting lever, the stability of the vessel will be stable

• None of the above