Question 360General Subjects - 1st Asst/Chief

The correct answer is A) 1/12 hour. The reasoning is that according to U.S. Coast Guard regulations, the minimum short-time rating for the replacement motor on a watertight door should be 1/12 hour, or 5 minutes. This is the minimum time required for the watertight door to be able to operate in an emergency situation, ensuring the integrity of the watertight compartment. The other options, B) 1/4 hour, C) 1/2 hour, and D) 1 hour, would not meet the minimum regulatory requirement and are therefore incorrect.