Mack, hull DE-358, belonged to the John C. Butler class of destroyer escorts. Consolidated Steel Corporation, at Orange, Texas, laid her down on 14 February 1944 and launched her on 11 April 1944. The Navy commissioned her on 16 August 1944. Her first commanding officer was Lieutenant Commander John Franklin Nelson.
Her Pacific duty took her to Hollandia, New Guinea, Palau, and Leyte.
Her commissioned service ended on 11 December 1946. She went to the breakers later.
