A. Describe how the distribution of mass within the ship affects the rolling period; B) The 1⁄2 ordinates of a water plane at 15m intervals, commencing from aft, are 1, 7, 10.5, 11, 11, 10.5, 8, 4 and 0m. Calculate: (a). TPC; (b). Distance of the centre of flotation from midships. (c). Second moment of area of the water plane about a transverse axis through the centre of flotation.

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