Ship Manoeuvring, Handling. Test 18

When operating with conventional screw tugs, what is the function of the 'Gob' or 'Gog' rope?

To secure the tug to the ship
To keep the tug at the correct place on the ship's side when pushing
To improve the bollard pull of the tug
To reduce the chance of 'girting'

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?

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

You want to stop your ship as quickly as possible without too much change in the heading. What can you do to achieve this?

Make a complete turning circle.
Put the engines full astern.
Use the rudder hard over both sides while reducing engine speed.
Do a zigzag manoeuvre.

You are performing an overtaking manoeuvre in confined waters. What should you watch out for?

The change in speed of the other ship.
The bow may be pulled towards and the stern may be pushed away from the other ship as you pass.
The stern may be pulled towards and the bow may be pushed away from the other ship as you pass.
The change in your underkeel clearance.

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

What is most noticeable about a ship with good course keeping stability?

When you put the rudder amidships, she will quickly return to a straight course.
She will maintain her course until large rudder angles are applied.
When you apply rudder, she will take time before answering.
When you apply rudder, she will continue to turn for sometime after the rudder is put amidships.

Your engine is going astern and you gather sternway. The rudder is amidships and you are operating on a single, right-handed fixed screw. How will your ship react?

You will go straight astern.
Your stern will be pushed to starboard.
You will change heading to starboard.
You will change heading to port.

In which of these vessel types is 'squat' likely to be most pronounced?

A vessel with a high block coefficient.
A supply or anchor handling vessel.
A cargo liner.
A vessel with a very wide beam compared to length.

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Ship Manoeuvring, Handling. Test 18

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