The U.S. Army Transport Mount Vernon was originally the 19,503 gross ton passenger liner Kronprinzessin Cecilie, built at Stettin, Germany, in 1906. She operated as USS Mount Vernon beginning in 1917 and was transferred to the War Department when the Navy placed her out of commission in September 1919. While in Army service she made one round trip voyage to the Russian Far East and then returned to the Atlantic coast to be laid up. Mount Vernon was in reserve, generally in the Chesapeake Bay region, for the next two decades. She was scrapped in 1940, after it was decided that she was too old to be worth reconditioning for World War II employment.