Marine Electrical Systems USCG Question #994 (Set 34)

What is the functional purpose of the 'MS 2' contacts in the hoist controller circuit shown in the illustration? EL-0102

USCG Exam Illustration EL-0102
USCG Examination Diagram: Illustration EL-0102
Official USCG Answer & Rule Citation

Correct Answer: Option C — The 'MS 2' contacts are not used in this particular application

Schematic analysis of standard marine winch controllers frequently reveals auxiliary contact designations that are unassigned or reserved for optional accessory features, meaning MS 2 plays no operational role in this specific control circuit configuration.

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