Name one type of reactor used in naval nuclear propulsion.

The Pressurized Water Reactor (PWR) is widely used in naval nuclear propulsion systems, particularly in submarines and aircraft carriers of the United States Navy. The design of a PWR allows it to efficiently convert nuclear energy into thermal energy while maintaining the reactor core at high pressures. This high-pressure environment prevents the water from boiling, which is crucial for maintaining control over the heat produced within the reactor.

In naval applications, the PWR not only serves as a reliable power source but also contributes to the stealth of submarines, as it operates quietly and minimizes external noise. The integration of the PWR into naval vessels enables long endurance missions without the need for refueling, enhancing operational capability and strategic mobility. Its proven reliability and safety features make the PWR the reactor of choice for naval nuclear propulsion, which is a critical component of modern naval warfare.

While other reactor types, such as the Boiling Water Reactor (BWR) and various experimental reactors, have their applications, they do not match the specific needs and specifications of naval propulsion systems as effectively as the PWR.