STAN full power trials are done when?

• A. Before engine start
• B. During sea trials only
• C. Both A and B
• D. Never

Answer: (C)

Testing the propulsion plant at full power is done both on a test stand before installation and during sea trials. The idea is to verify that the engine and generator can reach and sustain their maximum rated output in a controlled environment first, without the ship, to catch any issues with fuel, lubrication, cooling, controls, or instrumentation. Then, during sea trials, you confirm that the same machinery can deliver full power under real operating conditions, with the hull, propeller, and sea interactions all considered. Doing both ensures the system is ready for full-load operation in actual service.