The progressive operation of the contactors marked "1A" through "4A" provide the winch hoist controller shown in the illustration with what functionality? Illustration EL-0102
Official USCG Answer & Rule Citation
Correct Answer: Option D — acceleration
Progressive stepping of acceleration contactors 1A through 4A gradually cuts out external armature resistance in DC winch motors, limiting starting current surges and providing smooth torque buildup during hoisting or lowering operations.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.