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 Xarifa (SP-581) was a patrol boat in the United States Navy.
USS Sultana (SP-134) was a yacht acquired under a free lease by the U.S. Navy during World War I. She was outfitted as a patrol craft and was assigned to escort duty in the North Atlantic Ocean. She served honorably—rescuing survivors adrift in the water and protecting cargo ships from submarine attack—and was returned to her owner at the close of the war.
USS Corona (SP-813) was a yacht acquired by the U.S. Navy during World War I. She was outfitted as a patrol craft, and assigned to the North Atlantic Ocean, based out of Brest, France, to protect shipping from the German submarines and Q-ships. Post-war she was decommissioned, returned to her original condition, and disposed of by public auction.
USS Wacondah (SP-238) was an advanced-design yacht acquired by the U.S. Navy during World War I. She was outfitted as an armed patrol craft assigned to guard the New York City harbor against German submarines and to provide escort protection to commercial ships. Post-war she was sold and continued her maritime career as the yacht Intercolonial.
USS Artemis (SP-593), launched as the steam yacht Cristina then upon sale the yacht was renamed Artemis. The yacht was purchased by the United States Navy during World War I and the name was retained. Artemis was armed with guns and depth charges and sent to Europe as a patrol craft to protect Allied ships from German submarines and other dangers. The patrol yacht was renamed Arcturus in 1918. Post-war she was returned to the United States and turned over to the United States Coast and Geodetic Survey. Later, again Artemis, the vessel was in civilian operation until burning and sinking in 1927.
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.
The first USS Mustang (SP-36) was an armed yacht that served in the United States Navy as a patrol vessel from 1917 to 1919.
The fifth USS Despatch (SP-68), later PY-8, originally USS Vixen (SP-68), was a yacht that served in the United States Navy as a tender from 1917 to 1919 and from 1920 to 1921.
USS Joyance (SP-72) was an armed yacht that served in the United States Navy as a patrol vessel from 1917 to 1919.
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 Taniwha (SP-129) was an armed yacht that served in the United States Navy as a patrol vessel from 1917 to 1919.
The second USS Sovereign (SP-170) was an armed yacht that served in the United States Navy as a patrol vessel from 1918 to 1919.
USS Hopestill (SP-191) was a United States Navy patrol vessel in commission from 1917 to 1919.
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.
The first USS Tuna (SP-664) was a United States Navy patrol vessel in commission from 1917 to 1919.
USS Linta (SP-721) was a United States Navy patrol vessel in commission from 1917 to 1919.
The second USS Calumet (SP-723) was a United States Navy patrol vessel in commission from 1917 to 1919.
USS Audwin (SP-451) was a patrol vessel that served in the United States Navy from 1917 to 1919. She then was a survey vessel in the United States Coast and Geodetic Survey from 1919 to 1927.
United States