USS Cymophane (PYc-26) was a Cymophane-class patrol yacht acquired by the United States Navy early during World War II. She was used for patrol, escort, anti-submarine, and rescue operations along coastal waters.
The first USS Hurst (SP-3196) was a United States Navy patrol vessel in commission from 1918 to 1919.
USS Helenita (SP-210) was a yacht leased from its owner by the U.S. Navy during World War I. She was outfitted as an armed patrol craft and initially assigned to North Atlantic Ocean duty, but found to be too lightly built for the ocean. She was then relegated to patrol of Long Island Sound and the Delaware Bay until war's end, when her guns were removed and she was returned to her owner.
USS Utowana (SP-951) – also known as USS Victorine (SP-951) -- was a fishing trawler acquired by the U.S. Navy during World War I. The Navy had planned to use her as a minesweeper based out of Kittery, Maine; however, Utowana spent most of her service time operating as an armed patrol craft, responsible for escorting Allied ships across the dangerous North Atlantic Ocean. She served through the war and the armistice before returning to the United States for decommissioning.
USS Remlik (SP-157) was a yacht acquired by the U.S. Navy during World War I. She was converted into an armed patrol craft and assigned to protect ships from German submarines in the North Atlantic Ocean. Post-war she was decommissioned, stripped of naval ordnance and sold in Norfolk, Virginia.
USS Privateer (SP-179), later YP-179, was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1930.
The first USS Hiawatha (SP-183) was an armed yacht that served in the United States Navy as a patrol vessel from 1917 to 1920.
USC&GS Mikawe was a United States Coast and Geodetic Survey launch in commission from 1920 to 1939.
The first USS Sylvia was a United States Navy patrol vessel in commission in 1898 and from 1917 to 1919. She saw service in both the Spanish–American War and World War I.
USS Fli-Hawk (SP-550) was a United States Navy patrol vessel in commission from 1917 to 1919.
USS Wild Goose (SP-562) was a United States Navy patrol vessel in commission from 1917 to 1920.
USS Raeo (SP-588) was a United States Navy patrol vessel in commission from 1917 to 1919. Prior to her U.S. Navy service, she operated as the motor passenger vessel Raeo from 1908 to 1917. After the conclusion of her U.S. Navy career, she served as the fishery patrol vessel USFS Kittiwake in the United States Bureau of Fisheries fleet from 1919 to 1940 and as US FWS Kittiwake in the Fish and Wildlife Service fleet from 1940 to 1942 and from 1944 to at least 1945, and perhaps as late as 1948. During World War II, she again served in the U.S. Navy, this time as the yard patrol boat USS YP-199. She was the civilian fishing vessel Raeo from 1948 to 1957, then operated in various roles as Harbor Queen from 1957 to 1997. She became Entiat Princess in 1998 and as of 2009 was still in service.
USS Katie (SP-660) was a United States Navy patrol vessel in commission from 1917 to 1918.
USS Luce Bros. (SP-846) was a United States Navy patrol vessel in commission from 1917 to 1919.
The first USS Elizabeth (SP-972) was a United States Navy patrol vessel in service from 1917 to 1919.
USS L. A. Dempsey (SP-1231) was a United States Navy armed tug that was in commission as a patrol vessel from 1917 to 1919.
The second USS Snapper (SP-2714) was a United States Navy patrol vessel in commission from 1918 to 1919.
The second USS Viking (SP-3314) was a United States Navy patrol vessel in service from 1918 to 1919.
USS M. J. Scanlon (ID-3513) was a United States Navy cargo ship in commission from 1918 to 1919.
USS Western Chief (ID-3161) was a cargo ship of the United States Navy that served during World War I and its immediate aftermath. As SS Western Chief, she was sunk during World War II after being sold to the United Kingdom for use as a merchant ship.
United States