USS Absegami (SP-371) was a motorboat acquired on a free lease by the United States Navy during World War I. She was outfitted as an armed patrol craft and assigned to patrol the Delaware River from Philadelphia, Pennsylvania, to Cape May, New Jersey on the Delaware Bay. When the Navy found her excess to their needs, she was returned to her former owner.
USS Edithena was a United States Navy patrol vessel in commission from 1917 to 1919 that saw service during World War I. Prior to her U.S. Navy service, she operated as the private motor yacht Edithena from 1914 to 1917. After the conclusion World War I, she served as the fishery patrol vessel USFS Widgeon in the fleet of the United States Bureau of Fisheries from 1919 to 1940 and as US FWS Widgeon in the fleet of the Fish and Wildlife Service from 1940 to 1942. During World War II, she returned to U.S. Navy service from 1942 to 1944 as the yard patrol boat USS YP-200. By 1947 she had returned to private ownership, first as Edithena and during the 1970s and 1980s as the fishing vessel Ila Mae.
The Royal Naval Patrol Service (RNPS) was a branch of the Royal Navy active during both the First and Second World Wars. The RNPS operated many small auxiliary vessels such as naval trawlers for anti-submarine and minesweeping operations to protect coastal Britain and convoys.
USS Halcyon II (SP-582) was a yacht acquired by the U.S. Navy during World War I. She was outfitted as an armed patrol craft and stationed in Boston harbor in Massachusetts. She spent much of the war patrolling the Massachusetts waterways for German submarines and, in 1919, was decommissioned after being damaged in a collision.
USS Halcyon (SP-518) was a United States Navy patrol vessel in commission from 1917 to 1919. She saw service during World War I and its immediate aftermath. After the conclusion of her naval service, she was in the United States Bureau of Fisheries fleet as the research vessel USFS Halcyon from 1919 to 1927.
USS Patrol No. 1 (SP-45), often rendered as USS Patrol #1, was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919.
USS Helena I (SP-24) was an armed yacht that served the United States Navy as a patrol vessel from 1917 to 1919.
USS Coco (SP-110) was an armed motorboat that served in the United States Navy as a Section patrol vessel from 1917 to 1919.
USS Katherine K. (SP-220) was a United States Navy patrol vessel and tug in commission from 1917 to 1919.
USS Sans Souci II (SP-301) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919.
USS Nemesis (SP-343) was a patrol vessel that served in the United States Navy from 1917 to 1918.
USS Get There (SP-579) was a United States Navy section patrol craft in commission from 1917 to 1919.
USS St. Sebastian (SP-470) was a United States Navy patrol vessel in commission from 1917 to 1919.
The second USS Sylvia (SP-471), later USS SP-471, was a United States Navy patrol vessel in commission from 1917 to 1919.
USS Fli-Hawk (SP-550) was a United States Navy patrol vessel in commission from 1917 to 1919.
USS Shada (SP-580) was a United States Navy patrol vessel in commission from 1917 to 1918.
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 McKeever Brothers (SP-683), sometimes written as USS McKeever Bros., was a United States Navy patrol vessel and minesweeper in commission from 1917 to 1919.
USS Liberty III (SP-1229), sometimes written Liberty # 3, and also referred to during her naval career as Liberty and as Pilot Boat Liberty, No. 3, was a United States Navy patrol vessel in commission from 1917 to 1919. The Liberty, was a pilot boat from 1896-1917. She was a replacement for the pilot boat D. J. Lawlor. After World War I, the Liberty returned to pilot service until 1934 when she was purchased as a yacht.
United States