Ship daily maintenance is the fundamental line of defense to ensure navigation safety, which must be advanced in strict accordance with systematic operation specifications. Daily inspections need to cover core parts such as main engines, auxiliary engines, piping systems and electrical equipment. Record and compare equipment operation parameters every day, and timely identify hidden hazards like abnormal temperature, excessive vibration and seal leakage. For lubrication management, select lubricating grease of the corresponding grade in strict accordance with the equipment manual, and fill and replace it at the specified cycle to avoid excessive component wear caused by improper lubrication. For hull cleaning operations, regularly remove dirt and rust accumulated on decks and cabins, and carry out protective treatment on corrosion-prone areas to delay the aging rate of the hull structure. All daily maintenance operations must form complete paper and electronic records, ensuring that every maintenance action is traceable and providing accurate data support for subsequent regular overhauls.