The floating end of a shell-and-tube type cooler utilizes a packing ring to __________.

Correct Answer: Option A — prevent leakage past the floating end tube sheet

In USCG Marine Engineering General Subjects, for engine room systems involving 'The floating end of a shell-and-tube type cooler utilizes a packing ring to', the standard operating requirement is: 'prevent leakage past the floating end tube sheet'.