The base ring shown in the illustration is identified by the letter __________. Illustration SE-0012

USCG Exam Illustration SE-0012
USCG Examination Diagram: Illustration SE-0012
Official USCG Answer & Rule Citation

Correct Answer: Option A — D

Component identification on standard Kingsbury thrust bearing drawings (SE-0012) designates the primary structural foundation ring that houses the leveling plates and thrust shoes as letter D, the base ring.

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