USS PGM-4 was a PGM-1 class motor gunboat that served in the United States Navy during World War II. She was originally laid down as an SC-497 class submarine chaser on 11 April 1942 by the Wilmington Boat Works, Inc. in Wilmington, California and launched on 7 September 1942. She was commissioned as USS SC-1053 on 17 March 1943. She was later converted to a PGM-1 class motor gunboat and renamed PGM-4 on 10 December 1943. After the war she was transferred to the Foreign Liquidations Commission on 9 June 1947. Her exact fate is unknown.
USS PGM-5 was a PGM-1 class motor gunboat that served in the United States Navy during World War II. She was originally laid down as an SC-497 class submarine chaser on 14 May 1942 by the Wilmington Boat Works in Wilmington, California and launched on 2 November 1942. She was commissioned as USS SC-1056 on 15 June 1943. She was later converted to a PGM-1 class motor gunboat and renamed PGM-5 on 10 December 1943. After the war she was transferred to the Foreign Liquidations Commission on 7 May 1947. Her exact fate is unknown.
USS SC-521 was a SC-497-class submarine chaser that served in the United States Navy during World War II. She was laid down on 5 May 1941 by the Annapolis Yacht Yard, Inc. in Annapolis, Maryland and launched on 1 February 1942. She was commissioned on 15 April 1942. She foundered on 10 July 1945 off Santa Cruz, Solomon Islands.
USS SC-636 was a SC-497 class submarine chaser that served in the United States Navy during World War II.
USS SC-694 was a SC-497 class submarine chaser that served in the United States Navy during World War II. She was laid down on 21 March 1942 by the Daytona Beach Boat Works in Daytona Beach, Florida, and launched on 25 May 1942. She was commissioned on 9 September 1942. She was bombed and sunk by German Ju 88 dive bombers off the coast of Palermo, Sicily, on 23 August 1943.
USS SC-497 was a SC-497 class submarine chaser that served in the United States Navy and later the Free French Navy during World War II. She was originally laid down as PC-497 on 29 November 1941 by the Westergard Boat Works in Rockport, Texas, and launched on 4 July 1941. She was commissioned as USS PC-497 on 16 October 1942. She was later reclassified as a SC-497 class submarine chaser and renamed SC-497. She was transferred to the Free French Navy as part of the Lend-Lease program on 18 March 1944 as CH-96. The transfer was made permanent on 15 August 1944. She was renamed CH-724 in 1952 and later P-724 before being withdrawn from service on 23 October 1980. Her exact fate is unknown.
USS SC-498 was a SC-497 class submarine chaser that served in the United States Navy, and later the Free French Navy, during World War II.
USS SC-1, prior to July 1920 known as USS Submarine Chaser No. 1 or USS S.C. 1, was an SC-1-class submarine chaser built for the United States Navy during World War I.
USS SC-21, until July 1920 known as USS Submarine Chaser No. 21 or USS S.C. 21, was an SC-1-class submarine chaser built for the United States Navy during World War I.
USS SC-23, until July 1920 known as USS Submarine Chaser No. 23 or USS S.C. 23, was an SC-1-class submarine chaser built for the United States Navy during World War I.
USS SC-22, during her service life known as USS Submarine Chaser No. 22 or USS S.C. 22, was an SC-1-class submarine chaser built for the United States Navy during World War I. She later served in the United States Coast Guard as USCGC Quigley.
USS SC-27, during her service life known as USS Submarine Chaser No. 27 or USS S.C. 27, was an SC-1-class submarine chaser built for the United States Navy during World War I. She later served in the United States Coast Guard as USCGC Richards.
USS SC-38, during her service life known as USS Submarine Chaser No. 38 or USS S.C. 38, was an SC-1-class submarine chaser built for the United States Navy during World War I.
USS SC-39, until July 1920 known as USS Submarine Chaser No. 39 or USS S.C. 39, was an SC-1-class submarine chaser built for the United States Navy during World War I.
USS SC-40, until July 1920 known as USS Submarine Chaser No. 40 or USS S.C. 40, was an SC-1-class submarine chaser built for the United States Navy during World War I.
USS SC-42, until July 1920 known as USS Submarine Chaser No. 42 or USS S.C. 42, was an SC-1-class submarine chaser built for the United States Navy during World War I.
USS SC-43, until July 1920 known as USS Submarine Chaser No. 43 or USS S.C. 43, was an SC-1-class submarine chaser built for the United States Navy during World War I.
MV Cape Pine is a charter boat operated by the Maritime Heritage Society of Vancouver. She began life as USS SC-715, a SC-497-class submarine chaser of the United States Navy. She was later transferred to the United States Coast Guard and served under the name USCGC Air Killdeer. Finally sold into mercantile service, as the Cape Pine, she worked as a high-endurance fish packer in the fisheries of the Canadian coast, and was then sold to the Maritime Heritage Society of Vancouver.
USS SC-696 was an SC-497-Class Submarine chaser of the United States Navy during World War II. She was sunk on 23 August 1943 by German dive bombers.
USS SC-744 was an SC-497-Class submarine chaser of the United States Navy during World War II. She was sunk by a Japanese Kamikaze in 1944.
United States 
