11. A guided missile destroyer is 155 m long BP and displaces 6228 tons in salt water when the draught mark readings are 4.53 m. forward and 4.66 m aft. The distances of the draught marks from amidships are 70.1 m forward and 83.8 m aft. The second moment of area of the waterplane is 0.71 x 106 m4 about the center of flotation which is 1.52 m abaft amidships. The waterplane area is 1626 m2. Calculate the new draughts when 142 tons of missiles are embarked at a mean distance of 57.9 m abaft amidships. Illustrate on a bold diagram, the forces and movements involved and state any assumptions made.