Which of the following types of bearings are used as line shaft bearings?

Official USCG Answer & Rule Citation

Correct Answer: Option A — Ring-oiled, Babbitt-faced, spherical seat, shell

Intermediate line shaft bearings utilize ring-oiled, Babbitt-faced spherical shells. Their self-aligning spherical seats accommodate hull flexure and minor shaft deflections while continuous oil rings supply boundary and hydrodynamic lubrication from an internal sump.

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