Ship Manoeuvring, Handling. Test 15 – Online Maritime Tests

When manoeuvring, when will you notice the effect of shallow water?

When your underkeel clearance is 15% or less.
When your underkeel clearance is 10% or less.
When your underkeel clearance is 50% or less.
When your underkeel clearance is 75% or less.

A ship is being turned short round in a tidal stream that is running at three knots. If in still waters this normally takes 12 minutes, what allowance, if any, should be made for the drift of the ship during the turn?

12 cables
3 cables
no allowance
6 cables

You have made a turning test at full speed in deep water. You are now going to make one with initial speed, slow ahead. Do you think the diameter will differ from that of initial full ahead?

Yes, there will be a large difference in the turning diameter between full and slow ahead.
The diameter will be the same whatever initial speed we have when starting the turn.
Yes, it will be much smaller with slow ahead.
Yes, it will be much greater with slow ahead.

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

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

Your ship is on a course of 240

go hard to port until you are heading 195
go hard to starboard until you are heading 300
go hard to port until you are heading 180
go hard to starboard to 285

The graph shows the decrease of speed, against time, on a 100,000 deadweight tanker proceeding at full speed of 13.3 knots and at minute 0 the engine was stopped. What is the decrease in speed most likely to be?

Series 2
Series 1
Series 3
None of the other options.

You have released the tug. To whom do you report when tugs are cleared?

To the tug.
No need for reporting as the order was given from the bridge.
To the Master.
To the Engine Department.

Most large tankers are moored using wire ropes on winches in order to remain safely moored alongside. If extra mooring lines are required, would a mixture of wires and full-length synthetic fibre ropes be appropriate?

Yes, because the fibre ropes are more flexible and complement the wires, adding to the overall effectiveness of the mooring.
No, because most fibre ropes of the required breaking strain are large and difficult to handle.
No, because the wires would take most of the strain and the fibre ropes practically none.
Yes, because the extra fibre ropes are easier to handle.

You are in a 360 degrees turn with engine full ahead. If you reduce speed while in the turn, how will the turning diameter change?

The turning diameter will not change.
The turning diameter will become smaller.
The change will depend on rudder angle.
The turning diameter will increase.

When connecting a tug, what speed do you think is the best for your vessel to maintain during this operation?

Stop the vessel completely before connecting.
The speed should be less than 5 knots, normally 3 - 5 knots.
The speed should be more than 7 knots.
A tug may be connected at any convenient speed.

Review Answers