The propellers on your twin screw vessel have a pitch of 16'04". What is the distance in a day's run if the average RPM is 94, and you estimate 7% positive slip?

Correct Answer: Option C — 338.3 miles

Propeller slip is calculated by multiplying pitch by total revolutions, then applying the slip percentage. For 16.33' pitch at 94 RPM over 1,440 minutes, the theoretical distance is 2,210,563 feet. Applying 7% positive slip (multiplying by 0.93) and converting to nautical miles (6,076.1 feet/mile) yields 338.3 miles.