A watchstander notes that lube-oil temperature on the main engine has been rising 2°F per hour over the last four hours but has not yet reached the alarm setpoint. The correct action is to:

Question

Accepted Answer

B. Investigate and report the trend immediately, since a slowly drifting reading is an early warning of fouling, wear, or a developing failure — NAVEDTRA 14104 §1-2 states that trends matter more than single readings and that a temperature slowly drifting off normal is an early warning of fouling, wear, or a developing failure that a good watchstander catches before an alarm does. Any reading outside its normal band is investigated and reported, not simply written down.

Answer

A. Continue the watch without action because the alarm has not activated

Answer

C. Log the readings at the next scheduled interval and notify the chief engineer only if the alarm activates

Answer

D. Reduce engine speed to lower the temperature below the trend line before logging the event

A watchstander notes that lube-oil temperature on the main engine has been rising 2°F per hour over the last four hours but has not yet reached the alarm setpoint. The correct action is to:

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