A submarine chaser or subchaser is a type of small naval vessel that is specifically intended for anti-submarine warfare. They encompass designs that are now largely obsolete, but which played an important role in the wars of the first half of the 20th century.

The SC-1 class was a large class of submarine chasers built during World War I for the United States Navy. They were ordered in very large numbers in order to combat attacks by German U-boats, with 442 boats built from 1917 to 1919.

Photographs and information on chasers and crews by hull number. Procedures, listening devices, arms, engines and navigation, First-hand accounts, typescripts, and journal entries on United States submarine chasers. Hull design, paint scheme, close-aboard photos, kits, and model showcase.

The PC-461-class submarine chasers were a class of 343 submarine chasers constructed mainly for the US Navy and built from 1941 to 1944. The PC-461 s were based primarily on two experimental submarine chasers, PC-451 and PC-452 .

U.S. Navy SC-1 –class submarine chasers performed significant services that became an integral part of the Allied effort to win World War I war at sea. They did this by their teamwork incessantly patrolling the eastern European and western United States littorals.

Imagine crossing the Atlantic Ocean in a wooden motorboat—but not an ordinary motorboat. The U.S. submarine chasers of WWI were 110’ in length, and were armed with a 3” Poole deck gun, racks of depth charges, a Y-gun launcher, and Lewis and Colt machine guns on the bridge wings.

Designed as anti-submarine warfare tools against German U-boats, 120 submarine chasers served on the east coast of the U.S. and in Europe during the World War I. The chasers were small,...

From several points of view, the 110-foot submarine chasers are the ideal type of craft for hunting submarines. As mentioned above, the suppression of local sounds offers no difficulties, thus permitting the use of the listening devices at maximum efficiency.

This is a rough overview of the strategy of sub chasing, based on a Navy document, titled Instructions and Doctrine for Sub Chaser Detachment One, marked CONFIDENTIAL and circulated by L.A. Cotten, Captain, U.S.N., Commanding. Note that there are several similar documents, and that the tactics are described somewhat differently at different ...

PC-453 was one of three Submarine Chasers built in a design competition. Built as a modern adaptation of the original SC-1 design of World War I. After tests, the PC-453 design became the prototype for the World War II wooden submarine chaser; Reclassified SC-453, 8 April 1943