-Sikorsky HSS-2B Seeking is an anti-submarine helicopter of the Maritime Self-Defense Force.
--The Maritime Self-Defense Force initially used HSS-2 and -2A, but from the amount procured in 1977, it was changed to HSS-2B type.
――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 detectors installed are HQS102 dipping sonar, HPS-102 search radar, ASQ-81B (V) -2 magnetic detector (MAD), AN / ALR-66ESM reverse detector, and sonobuoy shoot. Although it is equipped with 12 sonobuoys, as for the operation of sonobuoy, since it does not have an analysis device on its own machine, when it receives sonobuoy radio waves, 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 on-board detection device, which makes it possible to instantly display the necessary data on the scope of the occupant. The workload has been reduced and the accuracy of operational flights has improved dramatically.
――The 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 winds the hole-down cable as a carrier-based restraint device.
