The electric drive motor on one of your ship's electro-mechanically driven deck winches needs to be replaced. What minimum short-time rating should the replacement motor have in hours?

Correct Answer: Option B — 1/2

46 CFR 111.70-1 specifies that motors for deck winches, which are subject to intermittent duty cycles, must have a minimum short-time rating of 1/2 hour. This rating provides sufficient thermal capacity for the motor to perform standard deck operations without exceeding its insulation temperature limits during typical usage.