The Sikorsky SH-60 Seahawk also known as Sikorsky S-70 Is a multifunctional medium twin helicopter developed for the U.S. Navy, based on the structure of the Sikorsky UH-60 Black Hawk that is used in the United States Army and Air Force.
The S-70B, is the naval version of the helicopter Sikorsky S-70. His first was in 1979. Although it uses a structure very similar to the original S-70, known in the U.S. Army as a UH-60. The S-70B aircraft is more complex than the version used in the Army or Air Force, with almost 20% of different components.
The Seahawk is more expensive than previous versions, to have several additional refinements such as additional brake rotors or blades of the electric drive system for the collection of shovels. The landing gear has a shorter distance and the Seahawk 's engines are specially adapted for naval use, with special treatment for use in environments with high salinity, with a local probe for refueling and an emergency flotation system. In addition, the S-70B, is an aircraft adapted for use on board ships, with the task of increasing the capabilities of anti-submarine vessels in which they are embedded. In many countries, this helicopter has replaced the SH-3H Seaking of anti-submarine warfare.
- Royal Australian Navy - received 16 S-70B-2 Seahawks, and has 16 S-70Bs in service as of November 2008.
- Brazilian Navy - 4 S-70B Seahawks ordered in 2009 and will replace its older helicopters beginning in 2012.
- Hellenic Navy - Received 11 S-70B-6 Aegean Hawks, and has 11 S-70Bs in service as of November 2008.
- See SH-60J/K
- Spanish Navy (Armada Española) - received 12 S-70B-1 Seahawks and has 12 S-70Bs in service as of November 2008.
- Republic of China (Taiwan)
- Republic of China Navy - received 21 S-70C (10 S-70C(M)-1 and 11 S-70C(M)-2) Thunderhawks, and has 19 S-70Cs in service as of November 2008 in 701st and 702nd Helicopter Squadron (Light).
- Republic of Singapore Navy - ordered 6 S-70B Seahawks in 2005, with 3 in service in March 2010.
- Royal Thai Navy - received 6 S-70B-7 Seahawks, and has 6 MH-60S Seahawks order. It has 6 S-70Bs in use as of November 2008.
- Turkish Naval Forces - has received 8 S-70B-28 Seahawks with 17 more on order in 2007. It has 13 S-70Bs in use as of January 2010.
- United States
- Crew: 3–4
- Capacity: 5 passengers in cabin or slung load of 6,000 lb or internal load of 4,100 lb for B, F and H models and 11 passengers or slung load of 9,000 lb for S
- Length: 64 ft 8 in (19.75 m)
- Rotor diameter: 53 ft 8 in (16.35 m)
- Height: 17 ft 2 in (5.2 m)
- Disc area: 2,262 ft² (210 m²)
- Empty weight: 15,200 lb (6,895 kg)
- Loaded weight: 17,758 lb (8,055 kg) (ASW mission)
- Useful load: 6,684 lb (3,031 kg)
- Max takeoff weight: 21,884 lb (9,927 kg)
- Powerplant: 2× General Electric T700-GE-401C turboshaft, 1,890 shp (1,410 kW) take-off power each
- Maximum speed: 180 kn (333 km/h; 207 mph)
- Cruise speed: 146 kn (270 km/h; 168 mph)
- Range: 450 nmi (518 mi/834 km) at cruise speed
- Service ceiling: 12,000 ft (3,580 m)
- Rate of climb: 1,650 ft/min (8.38 m/s)
- Up to three Mark 46 torpedos or Mark 50 torpedos,
- AGM-114 Hellfire missile, 4 Hellfire missiles for SH-60B and HH-60H, 8 Hellfire missiles for MH-60S Block III.
- AGM-119 Penguin missile (being phased out),
- M60 machine gun or, M240 machine gun or GAU-16/A machine gun or GAU-17/A Minigun
- Rapid Airborne Mine Clearance System (RAMICS) using Mk 44 Mod 0 30 mm Cannon
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