SS Tasman was a 4,922 gross register tons (GRT) Dutch steamship built by Earle's Shipbuilding and Engineering Company Limited, Hull in 1921 for Koninklijke Paketvaart-Maatschappij (KPM), Batavia. With outbreak of the war in the Pacific and the fall of the Dutch East Indies, Tasman was one of 21 KPM vessels that sought refuge in Australia. These ships became the core of the initial Southwest Pacific Area (SWPA) command's permanent local fleet under U.S. Army control. After general service as a transport, the ship was converted to a hospital ship at Melbourne. The ship, under the Dutch flag and Dutch certification under the Hague Convention, served the remainder of the war as a Dutch hospital ship.