The Eurocopter MH-65 Dolphin is a twin-engined, single main rotor, MEDEVAC-capable Search and Rescue (SAR) helicopter operated by the United States Coast Guard (USCG). It is a variant of the French-built Eurocopter AS365 Dauphin.
The Dolphin is primarily a Short Range Recovery (SRR) aircraft. There are now a total of 102 Dolphins in the Coast Guard Fleet. The fleet has home ports in 17 cities on the Atlantic and Pacific Ocean, Gulf of Mexico, Hawaii, and the Great Lakes region. The Dolphin is usually deployed from shore but it can be deployed from medium and high endurance Coast Guard Cutters, as well as the Polar Icebreakers. The Dolphin's main jobs are: search and rescue, enforcement of laws and treaties (including drug interdiction), polar ice breaking, marine environmental protection including pollution control, and military readiness. When deployed from an icebreaker, the helicopter acts as the ship's eyes, searching out thinner and more navigable ice channels. They also have the job of airlifting supplies to villages isolated by winter, or transporting scientists to conduct remote research. The MH-65 is also used to patrol the Air Defense Identification Zone (ADIZ) around Washington, D.C., also known as the National Capital Region (NCR). Seven new-build MH-65Cs were acquired for this mission.
HH-65A/B upgraded with new 934 shp (696 kW) Arriel 2C2-CG engines that provide 40% more power and higher performance, plus an upgraded tail gearbox, long-nose avionics compartment, increased 9,480 lb (4,300 kg) MTOW, expanded lateral flight envelope and Vehicle and Engine Multifunction Display (VEMD) with First Limit Indicator (FLI). First retrofit completed in October 2004.