The device shown in figure "A" of the illustration is used to __________. Illustration MO-0042

USCG Exam Illustration MO-0042
USCG Examination Diagram: Illustration MO-0042
Official USCG Answer & Rule Citation

Correct Answer: Option C — provide lubrication to the cylinder

Large slow-speed marine diesel engines utilize specialized quill assemblies mounted on the cylinder liner to inject controlled quantities of high-alkalinity cylinder lubricating oil directly onto the sliding surfaces between the piston rings and the liner wall.

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