The third USS Somerset (AK-212) (ex-MC hull 2166) was laid down on 9 October 1944 by the Leathern D. Smith Shipbuilding Co., Sturgeon Bay, Wise., launched on 21 January 1945, acquired by the Navy from the Maritime Commission on 20 September 1945 and commissioned the same day.
Somerset was acquired for Navy use as a cargo ship but, due to the cessation of hostilities with Japan, she saw no naval service. She was returned to the Maritime Commission on 2 November 1945 and struck from the Navy list on 5 December 1945.