573. The DEEP DRILLER, while loaded as shown in the Sample Load #5, discharges 275.8 long tons. The resulting trim by the stern is 3 feet and list to port is 2 feet. What is the draft at the port aft draft mark?

The port aft draft is calculated by adding half the trim and half the list to the final mean draft. Given a trim of 3 feet and a list of 2 feet, the port aft draft is 2.5 feet deeper than the mean draft. With a final mean draft of 43.0 feet, the port aft draft is 45.5 feet, or 45 feet 6 inches.