The gasket "U" shown in the illustration, is used to seal the liquid space below the __________. Illustration MO-0112
Official USCG Answer & Rule Citation
Correct Answer: Option D — sliding piston
Gasket "U" provides a positive hydraulic seal beneath the sliding piston, preventing operating water leakage and maintaining the pressure differential required for bowl operation.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.