USCG USCG General Eng
Set 5 • Question #370 of 498
Launch Interactive Practice Room Which of the following statements describes the purpose of the split inflatable seal installed aft of the primary seal assembly for the propeller shaft?
A
To serve as a seal when adding packing to the stuffing box.
B
To allow repair or replacement of the primary seal elements when the ship is waterborne.
✓ Correct Answer
C
To eliminate leakage via the propeller shaft when the shaft is not rotating.
D
To provide a ready means for the entry of cooling water.
USCG NMC Regulatory Explanation
In USCG Marine Engineering General Subjects, for engine room systems involving 'Which of the following statements describes the purpose of the split inflatable seal installed aft of the primary seal assembly for the propeller shaft', the standard operating requirement is: 'To allow repair or replacement of the primary seal elements when the ship is waterborne.'.
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