USS Carnelian (PY-19) was a converted yacht that patrolled with the United States Navy in World War II. She was named for carnelian.
USS Impetuous (PYc-46) was a private yacht purchased by the Navy in August 1940 that served as a patrol boat of the United States Navy in Central America. The yacht was built as Paragon, the first of at least two Davol yachts to bear the name, in 1915 for Charles J. Davol of Providence, Rhode Island. In 1916 Davol sold the yacht to John Fred Betz, 3d of Philadelphia who renamed the yacht Sybilla III which served as the Section Patrol yacht USS Sybilla III (SP-104) from May 1917 to December 1918. Sybilla III remained in Betz's ownership until sale in 1935 to R. Livingston Sullivan of Philadelphia who renamed the yacht Arlis. On 12 August 1940 the Navy purchased the yacht placing it in commission as USS PC-454 on 16 October. The vessel was given the name Impetuous and reclassified PYc-46 on 15 July 1943. The yacht was decommissioned at Philadelphia 31 August 1944 and transferred to the War Shipping Administration for sale.
USS Amethyst (PYc-3) was the yacht Samona II taken into service in the United States Navy serving as a patrol boat during World War II. After military service the vessel was returned to civilian status in 1946 and again became the yacht Samona II until sale and subsequent names of Pudlo and Explorer.
USS Hawk (PY-2/IX-14) was the converted British-built civilian yacht Hermione of 1891, acquired for service as a patrol yacht in the Spanish–American War. She later served in the Ohio and New York naval militias and on the Great Lakes until decommissioned in 1940.
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.
USS Isabel (SP-521), later PY-10, was a yacht in commission in the United States Navy as a destroyer from 1917 to 1920 and as a patrol yacht from 1921 to 1946.
The American motor yacht Haida was built in Germany in 1929 for Max C. Fleischmann and later saw service in the United States Navy during World War II as patrol yacht USS Argus (PY-14) and USC&GS Pioneer. In 1946 she returned to her role as a private yacht under a sequence of names and owners, and after a further refit in 2016 is now Haida 1929.
The first USS Cythera (SP-575/PY-26) was a United States Navy patrol vessel that saw service in the Atlantic Ocean during both World War I and World War II.
The sixth USS Niagara (SP-136), later PY-9, was a United States Navy patrol vessel in commission from 1918 to 1931 and which served during World War I.
USS Zircon (PY-16) was the private yacht Nakhoda acquired by the United States Navy in 1940 serving as an armed yacht from 1941 to 1946. The yacht Nakhoda was built for automobile executive Frederick J. Fisher by Pusey and Jones Corporation, Wilmington, Delaware delivered in 1930. After the war the yacht was sold and reverted to the original name until sold in 1951 to the United New York Sandy Hook Pilots Association and renamed New York.
USS Helena I (SP-24) was an armed yacht that served 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 Valiant (PYc-51), originally USS PC-509, was a United States Navy patrol vessel in commission from 1941 to 1944.
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.
USS Sylph (PY-12), briefly YP-71, was a yacht in commission in the United States Navy as a patrol yacht from 1940 to 1946.
USS Siren (PY-13), briefly CMc-1, was built by Pusey and Jones, Wilmington, Delaware and launched 15 November 1929 as the yacht Lotosland. The yacht was acquired by the United States Navy in October 1940 and placed in commission as a Patrol Yacht from 1940 to 1946.
USS Turquoise (PY-18), was a yacht in commission in the United States Navy as a Patrol Yacht from 1940 to 1943.
USS Tourmaline (PY-20) was a converted yacht that patrolled with the United States Navy in World War II.
USS Ruby (PY-21) was a converted yacht that patrolled with the United States Navy in World War II.
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
United States
