Aship of 9,000 tons displacement floats at a draft of 23 feet and has an upper deck 34 feet above the keel. a sea breaking over the bulwarks floods a portion of the upper deck with water to a depth of 3 feet. the flooded area is 60 feet long and 40 feet wide. if kg before taking on water was 20.0 feet, calculate the reduction in gm, assuming that km remains constant. the effects of both the added weight and free surface must be determined.