Engine Safety (Supplementary) USCG Question #543 (Set 7)

What is the function of the item "7" shown in the illustration? Illustration MO-0111

USCG Exam Illustration MO-0111
USCG Examination Diagram: Illustration MO-0111
Official USCG Answer & Rule Citation

Correct Answer: Option A — This jacket water pump circulates fresh water throughout the engine cooling and distiller heating systems.

The primary jacket water circulating pump forces treated fresh water through the engine block, cylinder heads, and connected heat recovery equipment.

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