The US Navy had a winner in the SH-3 Sea King. But like all good things, the Sea King became obsolete, and the Navy had to find a replacement. The answer was that the US Army was looking for a replacement for their UH-1 Iroquois (Huey). Robert McNamara would have been so proud, as the Army and Navy chose the same basic helicopter, Sikorski’s S-70, which became the Army’s UH-60 Blackhawk and, because the Navy’s just, well, different, the SH-60, HH-60 and MH-60 for the elder service.
The Navy version has the tail wheel moved forward, and doubled. This allows the tail on the ship-based helos to be folded, saving deck space. Navy missions include surface warfare, undersea warfare, anti-submarine warfare, SEAL insertion, replenishment, troop landings, search & rescue and Medevac.