You are reading the draft marks as shown in illustration D032DG. The water level forward is 4 inches below the 11, and the water level aft is 2 inches below the top of the 11. What is the mean draft?

Correct Answer: Option A — 11'-00"

Calculating draft marks requires applying the standard 6-inch interval between consecutive numbers and reading the offset from the reference mark. With forward and aft water levels measured relative to the 11-foot mark, averaging both readings results in a true mean draft of exactly 11 feet.