SS Ellengowan was a schooner-rigged, single-screw steamer built by Akers Mekaniske Verksted in Christiania (Oslo) Norway, under her original name, Nøkken. The vessel was powered by sail and a vertical direct-acting steam engine. Ellengowan sank at its moorings, unmanned, during the night of 27 April 1888 in Port Darwin and was abandoned. 103 years later, in 1991, she was discovered by divers, making it the oldest known shipwreck in Darwin Harbour.