Rolls-Royce Marine Spey

The Rolls-Royce Marine Spey is a marine gas turbine that Rolls-Royce built by adapting the Spey and Allison TF41 turbofan aircraft engines for ship propulsion, and it also draws on technology from the Tay and the RB211. It provides a power output of 19.5 MW, about 26,150 horsepower. The engine drives warships of several navies, among them the Royal Navy Type 22 and Type 23 frigates, the Japanese Asagiri, Hatakaze, Murasame, Takanami, Abukuma and Akizuki classes, and the Dutch De Zeven Provinciën and Karel Doorman class frigates. The article that describes it gives its first run only as the 1960s and has no specifications table of its own, so the engine's year and size figures beyond the power output remain to be sourced from a second page.