movement of a complete ship up and down in vertical plane about transverse axis

turning of a complete ship in a curve towards right or left, while it moves forward

rolling of a complete ship side-ways

none of the above

m.?².r cos ?

c.m.?².r sin ?

(1 - c)m.?².r(cos ? - sin ?)

m.?².r(cos ? - sin ?)

dedendum

addendum

clearance

working depth

minimum

zero

maximum

none of these

1 - 3 m/s

3 - 15 m/s

15 - 30 m/s

30 - 50 m/s