Ship Manoeuvring, Handling. Test 5 – Online Maritime Tests

Where is the rudder axis located on an unbalanced rudder?

Just in forepart of the centre-line (figure 4)
In the centre of the rudder square (figure 1).
In the afterpart of the centre-line (figure 2).
Just in forepart of the rudder square (figure 3).

'Overshoot' is an expression we use when talking about a ship's steering ability. What is the best way to determine how the 'overshoot' is on your ship?

Do a 540 degrees turning circle.
Do a 20/20 degrees zig-zag manoeuvre.
Do a 360 degrees turning circle.
Do a standing turn.

If a double banking operation is being conducted with one ship at anchor (which is yawing due to weather condition) and one tug is available for assisting in the operation, the tug should:

Assist the manoeuvring vessel.
Carry ropes from the approaching vessel to the other.
Endeavour to hold the anchored/yawing vessel steady.
Stand by and assist as necessary.

When will we notice the effect of shallow water?

When Under Keel clearance is 15% or less.
When Under Keel Clearance is 75% or less.
When Under Keel Clearance is 10% or less.
When Under Keel Clearance is 50% or less.

Do you think a ship's trim has any influence on steering abilities?

No, the ship will have the same steering ability unaffected by trim.
Yes, a ship usually steer better if trimmed by the bow.
No, it is usually best to have no trim at all.
Yes, the ship usually steer better if trimmed by the stern.

What would you say about a ship which is course unstable?

When you apply rudder, she will continue to turn when the rudder is put amidship, and may even increase rate of turn.
It will maintain course no matter how much rudder you apply.
When you put rudder amidship, she will continue on a straight course.
When you apply rudder, it will take time before she answers to it.

What shape of hull would you say a course unstable ship would have?

A ship with a long, slim hull.
A ship with a length to beam ratio less than 5.5
A ship with a length to beam ratio less than 7
A ship with a length to beam ratio greater than 5.5

Your ship is going full astern and making sternway. Where will the 'pivot point' be located? No wind, current.

At the center of gravity
At 1/6 of the ship's length off the bow
At 1/6 of the ship's length from the stern
Somewhere aft of the center of gravity, but it is impossible to pin-point the exact location

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