Which type of engine is used on a military warship?

Military warships typically use gas turbine engines, diesel engines, or a combination of both in a hybrid propulsion system. Gas turbines offer high speed and power, making them suitable for fast attack vessels and aircraft carriers, while diesel engines are often used for submarines and some surface ships due to their fuel efficiency and endurance. Some modern warships also utilize electric propulsion systems for improved stealth and maneuverability. The choice of engine depends on the specific operational requirements of the vessel.