Motor Plants & Auxiliary Boilers USCG Question #967 (Set 20)

According to the illustrated diesel engine cooling water systems diagram, what fluid is the low temperature central fresh water thermostat designed to maintain? Illustration MO-0129

USCG Exam Illustration MO-0129
USCG Examination Diagram: Illustration MO-0129
Official USCG Answer & Rule Citation

Correct Answer: Option C — The low temperature central fresh water supply header temperature.

Central fresh water system thermostatic bypass valves modulate flow to regulate the temperature of the water supplied directly to the engine cooling headers, maintaining stable thermal operating limits.

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