How many propulsion GTEs and GTGs are there?

• A. 4 GTEs and 3 GTGs
• B. 2 GTEs and 4 GTGs
• C. 3 GTEs and 4 GTGs
• D. 4 GTEs and 4 GTGs

Answer: (A)

Propulsion and electrical power on ships come from separate gas-turbine units sized to meet different needs: enough engines to deliver the required thrust and maneuverability, plus sufficient generators to power the ship’s systems with some reserve for maintenance or emergencies. In this setup, four gas-turbine engines are dedicated to propulsion, providing the necessary thrust and allowing load sharing across shafts. Three gas-turbine generators supply electrical power, with one unit kept as a reserve so essential systems remain powered if a generator is offline. That combination—four propulsion engines and three generators—balances propulsion capability with reliable electrical supply, which is why it’s the best fit.