She is equipped with an auxiliary engine of . They had the ship re-rigged, restored, and equipped with an auxiliary engine. A few towed guns have been given limited self-propulsion by means of an auxiliary engine. "Viking" was a vessel of 310 gross tons and equipped with a auxiliary engine. There was no separate cruise engine, except from a small auxiliary engine that produced electricity. The auxiliary is a vehicle, carrying an auxiliary engine and a booster engine. She was fitted with an auxiliary engine in 1916, and again in 1936. The history of steam yachts starts with large sailing yachts with a steam auxiliary engine. Further iron protection plating was added, and she was given an 18-horsepower auxiliary engine. An auxiliary engine of unknown rating was installed for cruising. The second USS "Zaca" is a wooden-hulled, schooner-rigged yacht with an auxiliary engine. The seven-cylinder auxiliary engine was brought back to life in 1975. During the Second World War, he designed an auxiliary engine for Sunderland flying boats.