Main engine lube oil temperature is reduced to what temperature when approaching port?

When approaching port, the main engine lube oil temperature is typically reduced to approximately 100 degrees Fahrenheit. This temperature is considered optimal for the operational safety and efficiency of the engine. Maintaining the lube oil within this range helps ensure proper lubrication of the engine's moving parts while preventing overheating.

As the vessel approaches port, it is crucial to manage the engine's temperature to avoid potential damage that could occur from operating at higher temperatures. A temperature setting around 100 degrees F strikes a balance between keeping the engine safely within operational parameters and ensuring that the lube oil provides adequate protection against wear and tear in the engine.