{
  "id": "type-091",
  "name": "Type 091 Class (Han Class)",
  "aliases": [],
  "domain": "naval",
  "country": "CHN",
  "category": "Nuclear attack submarine",
  "status": null,
  "fielded": 1974,
  "operators": [
    "CHN"
  ],
  "prolif_count": 1,
  "summary": "The Type 091 Class (Han Class) Chinese Nuclear Attack Submarine is a first-generation nuclear attack submarine produced by the People's Republic of China. They were the first nuclear-powered submarine employed by the People's Liberation Army Navy Submarine Force, and the first indigenously produced nuclear attack submarines in Asia.",
  "specs": [
    {
      "k": "crew",
      "v": 75,
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "length_m",
      "v": 101,
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "beam_m",
      "v": 10.6,
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Draft",
      "section": "dims",
      "v": "7.4 m",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Displacement (surface)",
      "section": "dims",
      "v": "4,572 tons",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "displacement_t",
      "v": 5639,
      "src": [
        "weg-type-091"
      ],
      "conf": "medium",
      "label": "Displacement (submerged)"
    },
    {
      "k": "propulsion",
      "v": "1 x 90 MW",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Engine power",
      "section": "mobility",
      "v": "12,000 total bhp; 1 shaft",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Diving depth",
      "section": "mobility",
      "v": "300 m",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Radars and sonars",
      "section": "firecontrol",
      "v": "1 x Snoop Tray Surface Search",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Name",
      "section": "firecontrol",
      "v": "1 x H/SQ2-262; 1 x H/SQG-207; 1 x Thales DUUX 5; 1 x CEIEC Type 921A",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Countermeasures",
      "section": "protection",
      "v": "Yes",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "NBC Water Washdown System",
      "section": "protection",
      "v": "Yes",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Torpedoes: torpedo tubes",
      "section": "armament",
      "v": "6 x 533-mm bow tubes",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Torpedoes: torpedos",
      "section": "armament",
      "v": "Yu-3 (Russian SET-65E) ASW torpedoes and Yu-4 anti-ship torpedoes carried.",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Torpedoes: basic load",
      "section": "armament",
      "v": "18 x Torpedoes",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Mines",
      "section": "armament",
      "v": "36 x in lieu of torpedoes",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "armament",
      "v": "YJ-82 SSM",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium"
    },
    {
      "k": "hulls",
      "v": 5,
      "src": [
        "weg-type-091"
      ],
      "conf": "medium",
      "note": "Hulls listed in the source card"
    }
  ],
  "payloads": [
    {
      "name": "YJ-82 SSM",
      "role": "Anti-Ship Cruise Missile",
      "src": [
        "weg-type-091"
      ],
      "conf": "medium",
      "caps": {
        "Type": "Anti-Ship Cruise Missile",
        "Guidance": "Inertial navigation/active radar homing terminal guidance",
        "Warhead": "165 kg high-explosive fragmenting warhead",
        "Speed": "Mach 0.9"
      },
      "range_km": 42
    }
  ],
  "variants": [
    {
      "name": "CHANG ZHENG-1",
      "text": "Commissioned: Aug. 1, 1974 Status: Museum",
      "src": [
        "weg-type-091"
      ]
    },
    {
      "name": "CHANG ZHENG-2",
      "text": "Commissioned: January 1980 Status: Stricken",
      "src": [
        "weg-type-091"
      ]
    },
    {
      "name": "CHANG ZHENG-3",
      "text": "Commissioned: Sept. 21, 1984 Status: Active",
      "src": [
        "weg-type-091"
      ]
    },
    {
      "name": "CHANG ZHENG-4",
      "text": "Commissioned: November 1988 Status: Active",
      "src": [
        "weg-type-091"
      ]
    },
    {
      "name": "CHANG ZHENG-5",
      "text": "Commissioned: December 1990 Status: Active",
      "src": [
        "weg-type-091"
      ]
    }
  ],
  "art": "submarine",
  "image": {
    "file": "type-091.jpg",
    "thumb": "type-091-thumb.jpg",
    "credit": "Service Depicted: Other Service (Assets/Still/1994/Navy/DN-SN-94-00790)",
    "license": "Public domain",
    "url": "https://commons.wikimedia.org/wiki/File:Han_class.jpg",
    "title": "File:Han class.jpg"
  },
  "verified": null,
  "changelog": [
    {
      "date": "2026-10-10",
      "change": "Entry created from the Worldwide Equipment Guide (ODIN), bulk import"
    },
    {
      "date": "2026-10-10",
      "change": "Added photo (Public domain)"
    }
  ],
  "url": "https://www.defensepedia.com/systems/type-091.html",
  "sources": {
    "weg-type-091": {
      "title": "Type 091 Class (Han Class) Chinese Nuclear Attack Submarine",
      "publisher": "U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)",
      "url": "https://odin.t2com.army.mil/WEG/Asset/Type_091_Class_Han_Class_Chinese_Nuclear_Attack_Submarine",
      "published": "2026-03-20",
      "tier": 1,
      "checked": "2026-10-10"
    }
  }
}