MN 1

A ship turns around a point called the "pivot point". What is the position of this point when the ship is going astern?

• At about 1/4 of ship's length from the stem.

• At the stern.

•   At about 1/4 of ship's length from the stern.

• At amidships.

A ship turns around a point called the 'pivot point". What is the position of this point when the ship is stopped in the water?

• At the ship's centre of gravity.

• Near the ship's stern.

• Outside of the ship's centre line.

• Near the ship's bow.

A ship turns around a point called the 'pivot point". What is the usual position of this point when the ship is at full sea speed?

• Amidships.

• At the stern.

• At about 1/4 of the ship's length from the bow.

•   At about 1/4 of the ship's length from the stern.

Does a ship's trim influence her steering abilities?

• Yes, a ship usually steers better if trimmed by the bow.

• No, a ship will have the same steering ability unaffected by trim.

• Yes, a ship usually steers better if trimmed by the stern.

• No, it is usually best to have no trim at all.

How is bank effect felt by a vessel?

• The vessel's bow is pushed away from the nearest bank.

• The vessel's stern is pushed away from the nearest bank.

• The whole vessel is drawn in parallel to the nearest bank.

• The whole vessel is pushed away parallel to the nearest bank.

How is shallow water effect felt by a vessel?

• The vessel has a tendency to turn to starboard (for a left turning propeller).

• The vessel has a tendency to turn to port (for a right turning propeller).

• The vessel becomes sluggish in responding to the rudder.

•   The vessel responds very quickly to the rudder.

How should you minimize squat effect?

• Decrease the speed.

• Increase the speed.

• Transfer ballast to change the ship's trim.

• Do a zig-zag manoeuvre and reduce the speed.

In a narrow canal, a ship proceeding at half speed ahead swings towards the port bank of the channel. As the bow approaches the bank, it would initially....

• be rejected away from the bank by the pressure

• be unaffected

• be pulled towards the bank by bank suction

• be first pulled towards the bank, then rejected away

In relation to squat effect, which of the following statements is incorrect?

• Squat results in an increase in ship's draft.

• Squat results in a decrease in underkeel clearance.

• Squat can be a serious problem for deep draft ships.

• Squat results in a decrease in ship's draft.

In ship handling terms, what is meant by "sinkage"?

• Sinkage is the deepest draft a vessel obtains aft when moving through the water.

• Sinkage is the change of draft experienced when moving through water.

• Sinkage is the extra draft a vessel experiences when comparatively heavily loaded both ends.

• Sinkage is the extra draft a vessel experiences when comparatively heavily loaded amidships.