The 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 vessels built from 1917 to 1919. This article lists details of the fourth 50 ships of the class. Ships See also List of patrol vessels of the United States Navy List of SC-1-class subchasers (SC-1 to SC-50) List of SC-1-class subchasers (SC-51 to SC-100) List of SC-1-class subchasers (SC-201 to SC-250) List of SC-1-class subchasers (SC-251 to SC-300) List of SC-1-class subchasers (SC-301 to SC-350) List of SC-1-class subchasers (SC-351 to SC-400) References SC-1-class submarine chasers World War I patrol vessels of the United States