In a diesel engine jacket water cooler, with sea water cooling the engine jacket cooling water, what statement is true?

Correct Answer: Option A — The jacket water pressure is always kept higher than the sea water pressure, and in case of a jacket water cooler leak, the jacket water expansion tank level will increase.

Under USCG National Maritime Center examination standards, the accepted correct answer is: The jacket water pressure is always kept higher than the sea water pressure, and in case of a jacket water cooler leak, the jacket water expansion tank level will increase..