USS Dolphin (PG-24) was a gunboat/dispatch vessel; the fourth ship of the United States Navy to share the name. Dolphin's keel was laid down by Delaware River Iron Ship Building and Engine Works of Chester, Pennsylvania. She was launched on 12 April 1884, with Captain George Dewey in command, and commissioned on 8 December 1885 with Captain R. W. Meade in command. Dolphin was the first Navy ship to fly the Flag of the President of the United States during President Chester A. Arthur's administration, and the second Navy ship to serve as a presidential yacht.
USS Winchester (SP-156) was an armed yacht that served in the United States Navy as a patrol vessel from 1917 to 1919. Prior to and following World War I, Winchester was a private yacht, later renamed Renard. In World War II, Renard was requisitioned for use in the Royal Canadian Navy as a patrol vessel, keeping her name. She was returned to her owners in 1944.
The third USS Sea Gull (SP-544) was a wooden yacht in the United States Navy.
USS Alacrity (SP-206) was a steel cruising yacht that served in the US Navy as a section patrol craft. It was built by Pusey & Jones at Wilmington, Delaware for W. A. Bradford in 1910 then sold to John H. Blodgett of Boston.
USS Antigone (ID-3007) was a transport for the United States Navy during World War I, and the first ship of that name for the U.S. Navy. She was originally SS Neckar for North German Lloyd from her 1900 launch until seized by the U.S. in 1917. After her war service she was SS Potomac for United States Lines.
USS Rijndam (ID-2505) was a transport for the United States Navy during World War I. Both before and after her Navy service she was known as SS Rijndam or Ryndam as an ocean liner for the Holland America Line.
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 Arawan II (SP-1) was a motor yacht that served in the United States Navy as a patrol vessel from 1917 to 1918.
USS De Grasse (ID-1217) was the projected name for an armed yacht that the United States Navy acquired for service as a patrol vessel in 1918 but, according to some sources, never commissioned, although other sources claim she saw brief naval service in 1918. In World War II, she was reacquired and served as YP-506. The yacht's official number was registered under the name Fleet as of 1959, fate unknown.
USS Munindies (ID-2093) was a cargo ship that served in the United States Navy 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.
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.
USS Aloha (SP-317) was a United States Navy patrol vessel in commission from 1917 to 1919.
USS Legonia II (SP-399) was a United States Navy patrol vessel in commission from 1917 to 1921.
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.
The first USS Ibis (SP-3051), also listed as USS Ibis (ID-3051), was a United States Navy minesweeper in commission from 1918 to 1919.
USS Sapphire (SP-710) was a United States Navy patrol vessel in commission from 1917 to 1918.
The second USS Wissahickon (SP-852), which also served as USS SP-852, was a United States Navy patrol vessel in commission from 1917 to 1918.
USS Elfrida, later USS Elfrida (SP-988), was a United States Navy patrol vessel in commission from 1898 to 1918. She served in the Spanish–American War and World War I.
