Rolls-Royce PWR

The Rolls-Royce pressurised water reactor (PWR) series has powered British nuclear submarines since the Valiant class, commissioned in 1966. The first British nuclear submarine, HMS Dreadnought, was powered by a Westinghouse S5W reactor. Nuclear reactor designs, operating methods and performance standards are highly classified. Details of this type regarding the reactors are not available.

Rolls-Royce PWR

The Rolls-Royce pressurised water reactor (PWR) series has powered British nuclear submarines since the Valiant class, commissioned in 1966. The first British nuclear submarine, HMS Dreadnought, was powered by a Westinghouse S5W reactor. Nuclear reactor designs, operating methods and performance standards are highly classified. Details of this type regarding the reactors are not available.