The engine is the most critical component, determining the operational efficiency of every vessel. Therefore, to ensure durability, safety, and high performance, it is essential to strictly follow the proper operating procedures. Below are some key notes for engine operation:

• After starting, let the engine idle for a few minutes before increasing to the rated speed. Operate at full load only when the cooling water temperature is above 60°C and the lubricating oil temperature is above 50°C.

• During the break-in period (the first 50 hours), operate under medium load. Increase load and speed gradually, avoiding sudden changes.

• Under normal load conditions, the engine can run continuously at rated power. Operation at 110% load is allowed for a maximum of 20 minutes. After reducing load, let the engine idle for 1–2 minutes before shutting down.

• Check exhaust gas color regularly. If black or white smoke appears, stop the engine for inspection.

• Frequently inspect the engine for water, air, or oil leakage. If detected, resolve the issue thoroughly before continuing operation.

In addition to the above notes, technicians should also regularly monitor the following key parameters to ensure the engine remains in optimal condition:

• Lubricating oil pressure: ≥200 kPa (at low speed) / 450–650 kPa (at rated load).

• Lubricating oil temperature: 85–105°C.

• Cooling water temperature: 75–95°C.

• Exhaust gas temperature after the turbine: ≤550°C.

• Intake air temperature after intercooling: 50–60°C.

A well-maintained marine engine not only delivers optimal operational efficiency but also helps reduce repair costs and extend engine service life. Investing in proper maintenance is an investment in peace of mind and long-term success at sea. Make maintenance a routine practice so that every voyage begins and ends in safety and reliability.