How is lubrication provided to the device shown in the illustration? Illustration MO-0120

USCG Exam Illustration MO-0120
USCG Examination Diagram: Illustration MO-0120
Official USCG Answer & Rule Citation

Correct Answer: Option D — The lube oil enters through the supply pipes shown as #11 and eventually drains to the main engine sump.

Thrust bearings and associated auxiliary assemblies receive pressurized lubrication from external supply pipes labeled #11, maintaining a hydrodynamic oil film before draining back to the main engine sump.

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