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Q4. A ship of displacement 6000 tonne in Sea water of density Of 1025 kg/m³ has a breadth of 20 m and a draught of 5.5 m.

The area of waterplane is 1500 m², KB is 3.2 m, KG is 4.8 m and the second moment of area of the waterplane about the centreline is 22000 m4.

A rectangular wing tank of length 10 m and breadth 4 m is situated above a double bottom of depth 1.1 m as shown in Fig Q4.

Calculate the angle of heel that would occur if the wing tank were bilged.  (16)