Seaworthiness of Ships. Test 11 – Online Maritime Tests

What is the 'True Mean Draught?'

It is the mean between the amidship and after draughts.
The draught at the Centre of Flotation is considered as the True Mean Draught or the draught the vessel would lie in even keel conditions.
It is the mean of the forward and aft draughts or the amidships draught.
It is the draught between the forward and midships draughts.

What is the equilibrium state of the vessel in this diagram?

What happens when a vessel passes between water of different densities?

The forward draught decreases, whilst the aft draught increases, but the mean draught remains the same.
The densities of all waters through which a ship passes are essentially the same, so nothing happens.
If a ship goes from salt water to fresh water, there will be a bodily sinkage plus a small change of trim.
If passing from water of less density to water of greater density, the draught will be increased.

What is 'Pressure' in the context of stability?

About which point on a waterline does a vessel change trim?

If the forward draught of a vessel is greater than the aft draught, what state of trim is the vessel in?

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