Operation and maintenance are the main elements in every operational activity of the ship. Inadequacy in terms of ship engine maintenance could increase the rates of failures in the equipment that could lead to environmental problems, altering the performance, and would possibly create a large impact of business loss over the decline of availability on the vessels, increasing the downtime, and also potentially broaden the potential for major accidents that occur and endangering lives on board. The main engine on the ship is not only the most important part but also the most dominant component that often undergo problems. In actual conditions, the damage that occurs to an engine is very complex and would lead to fatality if there is a lack of proper monitoring and maintenance activities to be carried out when the ship is in operational condition. Before repairs are to be made onto the damage suffered by the ship's diesel engine, it is necessary to detect any damage to the engine in prior.

Keywords : Condition Monitoring; Exhaust Gas Temperature; FMECA; Forecasting Assessment; Main Engine.