USS O-13 (SS-74) was an O-class submarine of the United States Navy. Her keel was laid down on 6 March 1916 by the Lake Torpedo Boat Company in Bridgeport, Connecticut.
USS Nahma (SP-771) was a United States Navy patrol vessel in commission from 1917 to 1919. She operated during and in the immediate aftermath of World War I, seeing service in the Atlantic Ocean, Mediterranean Sea, Aegean Sea, and Black Sea. Prior to her U.S. Navy servce, she was the private yacht Nahma, a sister ship of the yacht which became the U.S. Navy patrol vessel and presidential yacht USS Mayflower.
USS Narada (SP-161) was a steam yacht that served in the United States Navy as a patrol vessel from 1917 to 1919.
An armed yacht was a yacht that was armed with weapons and was typically in the service of a navy. The word "yacht" was originally applied to small, fast and agile naval vessels suited to piracy and to employment by navies and coast guards against smugglers and pirates. Vessels of this type were adapted to racing by wealthy owners. The origin of civilian yachts as naval vessels, with their speed and maneuverability, made them useful for adaptation to their original function as patrol vessels. In the United States Navy armed yachts were typically private yachts expropriated for government use in times of war. Armed yachts served as patrol vessels during the Spanish–American War and the World Wars. In the latter conflicts, armed yachts were used as patrol vessels, convoy escorts, and in anti-submarine duties. In the United States, yachts were purchased from their owners with the owners given an option to repurchase their yacht at the close of hostilities.
The fifth USS Ranger (SP-237) was United States Navy patrol vessel in commission from 1917 to 1919.
USS Felicia (SP-642) was a yacht acquired by the United States Navy during World War I. She was outfitted and armed by the Navy as a patrol craft, and was assigned to patrol the New England waters. Her task of protecting ships from German submarines was interrupted by her collision with a submarine. Post-war she was reconfigured to her civilian condition, and was sold in 1919.
USS Druid (SP-321) was a private yacht launched 10 February 1902 as Rheclair that was built for Daniel G. Reid. Reid sold the yacht to Senator Nelson W. Aldrich who renamed the yacht Nirvana only just over a year before his death. Aldrich's estate chartered Nirvana to John Wanamaker until it was bought by his son Rodman Wanamaker who used the yacht for cruising until a fire on 14 December 1916, just before a cruise south, severely damaged the vessel. He chartered an alternate vessel for his trip south and, after full repairs, the yacht was sold to Walter W. Dwyer who gave it the name Druid with intentions to sell the yacht to the government in order to finance a shipyard venture in Pensacola, Florida.
USS Gem (SP-41) was an armed yacht that served in the United States Navy as a patrol vessel from 1917 to 1919.
USS Chichota (SP-65) was an armed yacht that served in the United States Navy as a patrol vessel from 1917 to 1918.
The third USS Mohican (SP-117), later USS SP-117, was an armed yacht that served in the United States Navy as a patrol vessel from 1917 to 1919.
USS Surf (SP-518) was a steam yacht that was offered to the United States Navy in 1917 but was never accepted.
USS Legonia II (SP-399) was a United States Navy patrol vessel in commission from 1917 to 1921.
The third USS Seneca (SP-427), later USS SP-427, was a United States Navy minesweeper and patrol vessel in commission from 1917 to 1919.
USS Gaivota (SP-436) was a United States Navy patrol vessel in commission from 1917 to 1918.
USS Arcady (SP-577) was a United States Navy patrol vessel in commission from 1917 to 1919.
USS Vivace (SP-583) was a United States Navy patrol vessel in commission from 1917 to 1918.
USS Lexington II (SP-705), later USS SP-705, was an American patrol vessel in commission from 1917 to 1918.
USS Sapphire (SP-710) was a United States Navy patrol vessel in commission from 1917 to 1918.
USS Linta (SP-721) was a United States Navy patrol vessel in commission from 1917 to 1919.
HMCS Wolf was an armed yacht of the Royal Canadian Navy during World War II that saw service on the British Columbia Coast of Canada. Constructed in 1915 as the yacht Wenowah, with the US entry into World War I, the vessel was taken into United States Navy service as USS Wenonah (SP-165) as a patrol ship. The vessel escorted convoys between the United States and Europe and between Gibraltar and Bizerte, Tunis and Genoa, Italy. After the war, Wenonah was loaned to the United States Coast and Geodetic Survey for three and a half years before being sold to private interests in 1928. In private ownership, the vessel was renamed at least twice, including Stranger and Blue Water.
United States
