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Q5. a) Sketch and label a statical stability curve for a vessel with its center of gravity on the centerline but having a negative metacentric height when in the upright condition.

(b) The ordinates for part of a statical stability curve for a bulk carrier at a displacement of 18000 tonne are given in Table Q2.

The ship has a hold 40 m long and 30 m wide which contains bulk grain stowed at a stowage rate of 1.25 m³/tonne.

During a heavy roll, the grain shifts so that the level surface is lowered by 1.5 m on one side and raised by 1.5 m on the other side.

(i) Draw the amended statical stability curve for the ship.

(ii) From the curve, determine the angle of list due to the cargo shift.