According to the sample sheet of a typical "List of Motors and Controls" as shown in the illustration, which of the following motor applications features a means of keeping the motor windings warm and dry when the motor is idle? Illustration EL-0204

Correct Answer: Option D — Amidship mooring winch

Space heaters are installed in motors exposed to humid or intermittent environments to prevent condensation within the windings. Per IEEE 45, deck machinery like mooring winches frequently utilizes these heaters to maintain insulation resistance above minimum safety thresholds when the equipment is idle, preventing potential ground faults during startup.