The electric winch drive motor on one of your ship's lifeboat davits needs to be replaced. What minimum short-time rating should the replacement motor have in hours?

Correct Answer: Option A — 1/12

46 CFR 111.70-1 requires that motors for lifeboat davits, which operate intermittently, must have a short-time rating of at least 1/12 hour (5 minutes). This rating ensures the motor can handle the thermal load of a full launch cycle without overheating or failing during an emergency abandonment.