GWS.89 Sailfish
The GWS.89 Sailfish is an anti-submarine missile or anti-torpedo countermeasure.
GWS.89
Functions: Two- or three-stage, short range, high speed anti-ship/anti-submarine/torpedo countermeasure
Service designation: Surface: MUM.89; Sub-surface: UUM.89
Launch Angle: Both versions have 360-degree initial acquisition capability
-89a: horizontal (+/-70 degrees)
-89b: vertical to fifteen degrees from the horizontal
Dimensions:
Length: Weapon: 5.37m
-89A: 5.94m (air launched version)
-89Ma/Ua: 6.92m (surface/sub-surface horizontal launch version)
-89Mb/Ub: 7.83m (surface/sub-surface vertical launch version)
Diameter: 533mm
Finspan: 732mm
Mass: 1698.45 kg
-89A: 1973.21 kg
-89Ma/Ua: 2268.42 kg
-89Mb/Ub: 2593.36 kg
Warhead: 250 kg shaped-charge tandem APHE
Range: 20+ km
Propulsion: Solid propellant rocket
-89A/Ma/Ua: hydroreactive agent booster
-89Mb/Ub: solid rocket booster, hydroreactive agent booster
Guidance:
Steering: pointed nose directs weapon to target, mid-mounted fins for additional course corrections
Guidance: initial (-89Ua version only): wire-guided; search and attack: short-range sonar, wake homing, and inertial guidance (laser ring gyroscope); terminal: inertial
Depth: up to 1,500m
Speed:
-Weapon: searching: ca. 70 kts; standard: 360-410 km/h; terminal: 480 km/h; closure rate: 800 km/h+ (anti-torpedo role)
-89A: maximum air drop speed: 556 km/h (300 kts)
-89Ua: launch speed: 50 kts; first stage separation: 50-75 kts
Cost: ca. $3 million
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