created to address deficiencies with the radar radio frequency altimeter, cooling system, and the rocket motor of the missile. The redesigned missile was designated HF-1A and entered production in 1981. General characteristics Primary Function: Anti-ship missile Power Plant: One-stage dual-thrust solid propellant rocket motor Range: 46 km Top Speed: 0.65 Mach or 240 m/s Length: 3.4 m Diameter: 34 cm Launch weight: 537.5 kg Warhead: 150 kg high explosive Guidance: Radar beam riding plus terminal semi-active radar homing Date Deployed: 1978 See also Hsiung Feng II Hsiung Feng IIE Hsiung Feng III References External links Taiwan primer Anti-ship cruise missiles of the Republic of China Weapons and ammunition introduced in 1978