{
  "id": "hy-4",
  "name": "HY-4 (SSC-7 Sadsack)",
  "aliases": [],
  "domain": "missile",
  "country": "CHN",
  "category": "Short-range anti-ship cruise missile chinese short-range anti-ship cruise missile",
  "status": null,
  "fielded": 1983,
  "operators": [
    "CHN",
    "BGD"
  ],
  "prolif_count": 1,
  "summary": "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.",
  "specs": [],
  "payloads": [
    {
      "name": "HY-4; NATO: SSC-7 Sadsack",
      "role": "Anti-Ship Cruise Missile",
      "src": [
        "weg-hy-4"
      ],
      "conf": "medium",
      "caps": {
        "Type": "Anti-Ship Cruise Missile",
        "Warhead": "Shaped charge high explosive",
        "Warhead weight": "513 kg",
        "Speed": "Mach 0.8 – 0.85",
        "Length": "7.36 m"
      },
      "range_km": 500
    }
  ],
  "variants": [
    {
      "name": "HY-1",
      "text": "Basic developmental version developed from the SY missiles, used only in very small numbers as land-to-ship missile for evaluation purposes. Did not enter series production and was replaced by HY-1J.",
      "src": [
        "weg-hy-4"
      ]
    },
    {
      "name": "HY-1J",
      "text": "Ship-to-ship variant for Type 051 DDG",
      "src": [
        "weg-hy-4"
      ]
    },
    {
      "name": "HY-1JA",
      "text": "Improved ship-to-ship variant with a new radar seeker for better anti-jamming capability and accuracy",
      "src": [
        "weg-hy-4"
      ]
    },
    {
      "name": "HY-1A",
      "text": "Land-to-ship variant based on the HY-1JA",
      "src": [
        "weg-hy-4"
      ]
    },
    {
      "name": "HY-1B",
      "text": "Low level target drone for the test of HQ-2A SAM",
      "src": [
        "weg-hy-4"
      ]
    },
    {
      "name": "HJ-1YB",
      "text": "Target drone for the test of HQ-61 SAM",
      "src": [
        "weg-hy-4"
      ]
    }
  ],
  "art": "cruise",
  "image": null,
  "verified": null,
  "changelog": [
    {
      "date": "2026-10-10",
      "change": "Entry created from the Worldwide Equipment Guide (ODIN), bulk import"
    }
  ],
  "url": "https://www.defensepedia.com/systems/hy-4.html",
  "sources": {
    "weg-hy-4": {
      "title": "HY-4 (SSC-7 Sadsack) Chinese Short-Range Anti-Ship Cruise Missile Chinese Short-Range Anti-Ship Cruise Missile",
      "publisher": "U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)",
      "url": "https://odin.t2com.army.mil/WEG/Asset/HY-4_SSC-7_Sadsack_Chinese_Short-Range_Anti-Ship_Cruise_Missile_Chinese_Short-Range_Anti-Ship_Cruise_Missile",
      "published": "2026-03-20",
      "tier": 1,
      "checked": "2026-10-10"
    }
  }
}