If the pitch of the propeller is 25.1 feet, and the revolutions per day are 91,591, calculate the day's run allowing 7% positive slip.

Correct Answer: Option B — 351.6 miles

Calculate theoretical distance (91,591 revolutions * 25.1 feet pitch = 2,298,934 feet). Convert to nautical miles (2,298,934 / 6076.1 = 378.35 miles). Apply 7% positive slip (378.35 * 0.93) to determine the actual distance made good, which is 351.6 miles.