General Subjects (Auxiliaries & Systems) USCG Question #1093 (Set 18)

What provision is made for sea chests for removal of ice from within the sea chest of a machinery space sea water cooling system during operation in icy waters?

Official USCG Answer & Rule Citation

Correct Answer: Option C — The ice may be removed by using the steaming out sea chest blow connection, if provided.

Sea chests in ice-prone waters utilize a steaming-out connection to circulate warm water or steam, effectively melting ice accumulation that obstructs suction. This prevents cooling water starvation to essential machinery. Per standard marine engineering practices for cold-weather operations, this thermal method is the primary defense against sea chest icing.

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