Ship Manoeuvring, Handling. Test 4 – Online Maritime Tests

The rudder is in hard over position, propeller stopped. The ship is turning slowly. What can we do to make her turn faster without increasing forward speed?

Give half astern as this will increase rate of turn.
Give full astern until ship is stopped, then full ahead again with rudder hard over.
Give a kick ahead.
Give slow ahead and leave her in that position.

How do we define the location of the 'pivot point'?

The point on the ship where the sideways motion forward is at maximum
The point where the sideways motion of the ship's centreline is zero.
The point on the ship where the forward motion is at maximum
The point on the ship where you have maximum sideways motion in a turn

Your ship is going full ahead as you start to slow down. Where is the position of the 'pivot point' now? No wind, current.

It will move aft as the ship slows down
It will move to the side of the center line
The 'pivot point' will move to the stern
Same position as when the ship is on full ahead

The ship is in a sharp turn and the log shows sideways motion to port both forward and aft. Where is the 'pivot point' located?

Aft of amidships
At 1/6 of the ship's length aft of the bow, but in the center line
At the center of gravity
Outside the ship itself

Do you think there is any reduction in the rudder lift force if the propeller is stopped?

No, we will maintain about 90% of the lift force.
Yes, we will loose about 10% of the lift force.
Yes, the lift force will be dramatically reduced.
No, the lift force is not effected by the propeller.

A vessel engaged in fishing and a power driven deep draft vessel restricted in her ability to manoeuvre are crossing so as to involve risk of collision. Which vessel keeps out of the way of the other?

They should call on VHF to agree on the action to take
The power driven vessel restricted in her ability to manoeuvre keeps out of the way of the fishing vessel
Both keep out of the way of the other
The fishing vessel keeps out of the way of the power driven vessel restricted in her ability to manoeuvre

When Sen. Deck Off. of both vessels involved have decided which will be the last lines to be let go whilst unmooring, these lines should be made fast as follows on the ship accepting the lines.

By shackling the eye to a strongpoint, fig. 4.
By keeping the rope on the warping drum of a deck winch, fig. 3.
By turning up the rope on the bitts, fig. 1.
By putting the eye on the bitts, fig. 2.

When a conventional rudder is put hard over it creates a lift force and a drag force. When the ship has started to turn, how much lift force do you think remains if the rudder-angle is decreased to 20 degrees from hard over position (35 degrees)?

About 10 %.
About 30 %.
About 80 %.
About 50 %.

A balanced rudder has some of the rudder area forward of the rudder axis. About how much area should this be to call it a balanced rudder?

It should be about 50%.
It should be about 5%.
It should be about 55%.
It should be about 20%.

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