Saar was a 1,026 GRT cargo ship that was built in 1937 by Stettiner Oderwerke AG, Stettin for German owners. She was seized by the Allies at Kolding, Denmark in May 1945, passed to the Ministry of War Transport (MoWT) and renamed Empire Congleton. In 1946, she was passed to the Soviet Union and renamed Donetz (Донец).