The bilge system has been performing well; however, the aft starboard engine room bilge-well suddenly fails to be pumped out. Which of the following should be done first to determine the cause?

Correct Answer: Option B — Attempt to pump out another bilge well to determine if the entire system is affected.

In USCG Marine Engineering General Subjects, for engine room systems involving 'The bilge system has been performing well; however, the aft starboard engine room bilge-well suddenly fails to be pumped out. Which of the following should be done first to determine the cause', the standard operating requirement is: 'Attempt to pump out another bilge well to determine if the entire system is affected.'.