(a) Describe water pressure loads on the ship's hull. (6)

(b) The breadth of the upper edge of a deep tank bulkhead is 12 meters. The vertical heights of the bulkhead at equidistant intervals across it are 0,3,5,6,5,3 and 0 meters respectively. Find the depth of the center of pressure below the waterline when the tank is filled to a head of 2 meters above the top of the tank (10)