Motor Plants & Auxiliary Boilers USCG Question #781 (Set 17)

A dirty lube oil strainer can result in __________.

Official USCG Answer & Rule Citation

Correct Answer: Option D — low bearing oil pressure

A clogged or dirty lubricating oil strainer restricts fluid flow to critical components. Under marine diesel operating principles governed by Title 46 CFR Subchapter F, this flow restriction directly starves main and connecting rod bearings, resulting in an immediate drop in bearing oil pressure.

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