What does HLSB indicate?

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Study for the Junior Officer Surface Material Readiness Course Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What does HLSB indicate?

Explanation:
HLSB signals a hot line shaft bearing condition. The line shaft runs from the main engine to the propeller, supported by bearings in the stern area. When that bearing overheats, it points to issues like insufficient lubrication, abnormal load, misalignment, or bearing wear. Treat it as a warning to reduce propulsion effort, verify lubrication oil pressure and temperature, ensure bearing cooling, and inspect for leaks or damage. It isn’t about a lock/unlock function, a hot bearing on the reduction gear, or a loss of oil pressure in the lubrication system.

HLSB signals a hot line shaft bearing condition. The line shaft runs from the main engine to the propeller, supported by bearings in the stern area. When that bearing overheats, it points to issues like insufficient lubrication, abnormal load, misalignment, or bearing wear. Treat it as a warning to reduce propulsion effort, verify lubrication oil pressure and temperature, ensure bearing cooling, and inspect for leaks or damage. It isn’t about a lock/unlock function, a hot bearing on the reduction gear, or a loss of oil pressure in the lubrication system.

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