What are the power sources for a fully enclosed lifeboat?

The fully enclosed lifeboats are powered by three sources: main propulsion, auxiliary power, and emergency start-up power, all of which meet SOLAS standards.

I. Main Propulsion Power (Core of Navigation)

• Diesel Internal Combustion Engine

Mainstream configuration: Air-cooled/water-cooled diesel engine, fueled by an onboard fuel tank, driving the propeller; range sufficient for continuous operation of over 24 hours, serving as the sole power source for normal navigation.

II. Human-Powered Auxiliary Power (Backup)

• Oars

Manual rowing in case of main engine failure; standard configuration includes multiple dedicated oars for short-distance emergency movement.

• Hand Crank Mechanism

Some models are equipped with a hand-crank propulsion mechanism as a backup solution for mechanical failures.

III. Starting & Equipment Power Supply

• Lead-acid Battery

Powers the diesel engine's electric start, cabin lighting, navigation/communication equipment, instruments, water pumps, etc.

• Compressed Air Cylinder

Backup starting power; in case of electric start failure, high-pressure air is used to start the diesel engine.

Note: Onboard sprinkler systems, drainage pumps, etc., are generally powered by a split from the main engine or by the battery; there is no additional independent engine.