SSM-1B

Type 90 Ship-to-Ship Missile, SSM-1B
Type	Anti-ship cruise missile
Place of origin	Japan
Service history
In service	1990
Used by	Japan Maritime Self-Defense Force
Production history
Manufacturer	Mitsubishi Heavy Industries
No. built	384
Specifications
Weight	661 kg (1,457 lb)
Length	5.08 m (16.7 ft)
Diameter	350 mm (13.8 in)
Warhead	high explosive
Warhead weight	225 kg (496 lb)
Engine	TJM-2 turbojet + 2 solid rockets
Wingspan	1.2 m (3.9 ft)
Operational range	150 km (81 nmi)
Flight altitude	5-6m
Speed	1,150 km/h (715 mph)
Guidance system	Inertial guidance and terminal active radar homing
Launch platform	Akizuki, Takanami, Hayabusa, Murasame -class ships

The Type 90 Ship-to-Ship Missile (90式艦対艦誘導弾, SSM-1B) is a ship-launched anti-ship missile developed by Japan's Mitsubishi Heavy Industries that entered service in 1992. It is a naval version of the truck-launched Type 88 (SSM-1) missile, which in turn was developed from the air-launched Type 80 (ASM-1) missile. The Japan Maritime Self-Defense Force bought 384 of the missiles which it fitted to its Akizuki, Takanami, Hayabusa, and Murasame-class ships. With a range of 150 km (81 nmi), high subsonic speed and 225 kg (496 lb) warhead, the Type 90 is similar to the US's RGM-84 Harpoon missile, and is replacing Harpoon on Japanese ships.