Seaworthiness of Ships. Test 3

What is the 'Range of Stability' on a statical stability curve?

What is the 'formula ' for calculating the righting moment of a ship?

What causes a 'Free Surface Effect?'

What is the 'Breadth Extreme?'

The maximum breadth measured from inside the plating.
The mean of the breadth at # 1 hatch and the breadth at the aftermost hatch.
The maximum breadth measured from the inside plating at the bottom of the centremost hatch.
The maximum breadth measured from outside the shell plating P to S.

What is a 'Moment', in terms of stability?

What is 'the moment of a couple?'

It is the righting lever that gives a rolling vessel the ability to return to her initial position, after having been forcibly heeled.
It is the combined strength of the two forces forming the couple.
It is the perpendicular distance between the forces forming the couple.
It is the product of one of the forces forming the couple, and the lever of the couple.

What does the diagram show, and what does it mean?

A stability model, which is used when calculating GM and other pertinent information.
The waterplane coefficient, which is the ratio between the waterplane area and the area of the circumscribing rectangle .
A mould of a ship inside in a block, which is used for modeling purposes in a shipyard.
The block coefficient of fineness, which is the ratio between the underwater volume, and volume of circumscribing block.

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