 The ship was reclassified as a submarine chaser, PC-1599, 1 June 1944, and reclassified again as a control submarine chaser, PCC-1599, 20 August 1945.Between 25 February and 12 May 1943, "Exploit" served on patrol, swept mines, and joined in amphibious exercises in Chesapeake Bay, based at Norfolk, Virginia.She performed similar duty in Casco Bay, Maine until 13 May 1944, when she returned to Norfolk for conversion to a submarine chaser.