HY-4 (SSC-7 Sadsack) Chinese Short-Range Anti-Ship Cruise Missile Chinese Short-Range Anti-Ship Cruise Missile

The HY-4 (SSC-7 Sadsack) Chinese Short-Range Anti-Ship Cruise Missile development of the C-201 is a mid-range ground-, air-, and ship-launched cruise missile. Development of the HY-4 is believed to have started in the mid-1970s, replacing the C-201 HY-2 liquid propellant sustainer motor with a small turbojet engine, and adding a monopulse active radar seeker. Apart from the substitution of the turbojet engine, the overall configuration of the HY-4 variant of the C-201 missile is similar to the HY-2 variants of the C-201, with two delta wings and tri-form rudder and tail. The missile has a radar altimeter which allows the cruise height to be varied between 70 and 200 m altitude, followed by a steep dive onto the target. The air-launched version is designated as C-401.