USS Hippocampus
| Hand written notes are on the original print, which is mounted on Hippocampus' "SP" data card, and reflect the compensation paid to the boat's owner for her use by the Navy during World War I. | |
| History | |
|---|---|
| United States | |
| Name | USS Hippocampus | 
| Namesake | name previously retained | 
| Laid down | 1912 | 
| Launched | 1913 at New York City | 
| Acquired | 21 June 1917 | 
| Commissioned | 25 June 1917 | 
| Decommissioned | November 1918 | 
| Stricken | 1918 | 
| Homeport | Rockland, Maine | 
| Identification | serial #31193 | 
| Fate | Returned to her owner on 5 April 1919 | 
| General characteristics | |
| Type | yacht | 
| Displacement | 23 tons | 
| Length | 56 ft (17 m) | 
| Beam | 11 ft 4 in (3.45 m) | 
| Draft | 2 ft 6 in (0.76 m) | 
| Propulsion | gasoline engine | 
| Speed | 11 knots | 
| Armament | one 11-pounder gun | 
USS Hippocampus (SP-654) was a yacht leased by the U.S. Navy during World War I. She was used as a patrol boat along the New England coast.