The Sikorsky HSS-2B Sea King is an anti-submarine helicopter of the Japan Maritime Self-Defense Force.
The Maritime Self-Defense Force initially used HSS-2 and -2A, but it was changed to HSS-2B type from procurement in 1977. The HSS-2B is an aircraft that is almost the same as the SH-3H used by the US Navy and has enhanced anti-submarine detection equipment.
The anti-submarine detection equipment to be installed includes HQS102 dipping sonar, HPS-102 search radar, ASQ-81B (V)-2 magnetic detector (MAD), AN / ALR-66ESM reverse detector, and 12 sonobuoy shoots. Although it is equipped with this equipment, since it does not have an analysis device on its own, when it receives a sonobuoy radio wave, it relays it to the mother ship via a data link device.
The HSS-2B is equipped with a tactical information processing device (TDDS) that comprehensively processes the data of the onboard detection device. The load has been reduced and the accuracy of strategic flight has improved dramatically.
HSS-2B has a land type and a ship-mounted type, and the ship-mounted type is equipped with a hydraulic winch that extends and hoists the hold-down cable as a shipboard restraint device.
- Crew: 4
- Main rotor diameter: 18.90m
- Total length: 22.15m
- Fuselage length: 16.69m
- Total height: 5.13m
- Gross weight: 9,298kg
- Engine: GE T-58-IHI-10M
- Thrust: 1,500shp x 2
- Maximum speed: 144kt (267km/h)
- Practical climb limit: 4,480m
- Cruising range: 524nm (970km)
- Fixed armament: None