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Q1.  A ship 126 m floats at a draught of 7.5 m and in this condition the immersed cross sectional areas and waterplane areas are as given in Tables Q1(A) and Q1(B). The equivalent base area (Ab) is required because of the fineness of the bottom shell.

(a) the equivalent base area value Ab; (8)

(b) the longitudinal position of the centre of buoyancy from midships; (4)

(c) the vertical position of the centre Of buoyancy above the base. (4)