Pegasus-class hydrofoil

USS Pegasus
Class overview
NamePegasus-class hydrofoil
BuildersBoeing Marine Systems, Renton, Washington
Operators United States Navy
Built1973–1982
In commission1977–1993
Completed6
Retired6
Preserved1
General characteristics
Displacement237.2 long tons (241 t)
Length133 ft (41 m)
Beam28 ft (8.5 m)
Propulsion
  • 2 × Mercedes-Benz MTU marine diesels (hullborne), 1,600 bhp (1,193 kW)
  • 1 × General Electric LM2500 gas turbine (Foilborne), 18,000 shp (13,423 kW)
Speed
  • 12 knots (22 km/h; 14 mph) hullborne
  • 48 knots (89 km/h; 55 mph) foilborne
Complement4 officers, 17 enlisted
Sensors and
processing systems
Armament
All six members of the Pegasus class of armed hydrofoils
The patrol combatant missile hydrofoils USS Aquila (PHM 4), front, and USS Gemini (PHM 6), center, lie tied up in port with a third PHM. The Coast Guard surface effect ship (SES) cutter USCGC Shearwater (WSES 3) is in the background.

The Pegasus-class hydrofoils were a series of fast attack patrol boats employed by the United States Navy. They were in service from 1977 until 1993. These hydrofoils carried the designation "PHM" for "Patrol Hydrofoil, Missile." The Pegasus-class vessels were originally intended for NATO operations in the North Sea and Baltic Sea. Subsequently, participation by other NATO navies, including Germany and Italy, ceased and the U.S. Navy proceeded to procure six PHMs, which were highly successful in conducting coastal operations, such as narcotics interdiction and coastal patrol, in the Caribbean basin.