What is the purpose of the Gas Turbine Generator Set (GTGS)?

• A. Supplies electrical power for the ship
• B. Drives the ship's propulsion
• C. Controls fuel flow to the engine
• D. Provides cooling for generators

Answer: (A)

The main function of a Gas Turbine Generator Set is to provide electrical power for the ship. The gas turbine drives a generator, and the electricity produced feeds the ship’s electrical distribution system, supporting everything from lights and communications to sensors and control systems, with the ability to run multiple units in parallel for more power or redundancy.

This setup is not intended to drive the ship’s propulsion directly—that role is handled by propulsion systems separate from the GTGS. The GTGS likewise isn’t primarily about adjusting fuel flow or cooling the generators; fuel flow is controlled by the turbine’s own fuel-control subsystem, and the generator’s cooling is managed by its dedicated cooling system.