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Q3) A ship is loaded to a displacement of 12262 tonne in sea water of density 1025kg/m³. In this condition the centre of gravity above the kneel (KG) is 6.28 m and the longitudinal position of the centre of gravity (LCG) IS 0.66 m forward of midships.

A rectangular tank, forward of midships, of length 15 m, breath 12 m and depth 5 m is partially filled with 738 tonne of sea water ballast to give a final trim of 0.75 m by the stern and an effective metacentric height of 1.25 m.

Determine for the ballast tank, EACH of the following, using the hydrostatic curves given in worksheet Q3:

(a) the height of the base above keel; (8)

(b) the position of the forward bulkhead from midships. (8)