The purpose of a ship is for the transportation or transfer of goods, but what is no less important is safety. Therefore checking every part is very important. Repair of the hull is mandatory because damage to the hull can result in imbalance in ship operations and even ship accidents. This study aims to describe the repair of the ship's hull on the KM. Harima PT. CSFI Cilacap. The study used a survey method by observing and being directly involved in the ship repair process. Improvements that are in accordance with the research objectives are repairing the ship's hull KM Harima. The results show that ship repair is carried out through checking, welding, welding, or painting.

Lubrication is an important thing in ship machining operations because it becomes a protective layer to separate two surfaces that are in contact with each other with three phases of objects whose volume remains at a constant temperature and pressure. Lubrication serves to prevent friction between components so that it becomes smoother. If the engine is at a high temperature, the oil viscosity will tend to decrease. The more often the lubricant is used, the thing that happens is that the temperature of the lubricating oil varies. The purpose of this study is to describe the behavior of the lubrication temperature on the ship. The research uses quantitative methods by observing the temperature of the main engine along the way by looking at indicators and direct measurements on the main engine using a thermocouple. The results showed that the temperature behavior is very dependent on the age of the lubrication and the operation of the cooling system on the ship's machining system. This study concludes that the lubrication temperature behavior is very dynamic and the influencing factors include the age of the lubrication, the type of lubricant and the engine, as well as the cooling performance.