{
  "id": "type-648",
  "name": "Type 648 Class (Dadao Class)",
  "aliases": [],
  "domain": "naval",
  "country": "CHN",
  "category": "Submarine repair ship",
  "status": null,
  "fielded": 1985,
  "operators": [
    "CHN"
  ],
  "prolif_count": 1,
  "summary": "The Type 648 repair ship is a Chinese submarine repair ship currently in service with the People's Liberation Army Navy (PLAN). It was one of the two units consisting the proposed mobile repair flotilla, but the floating dry dock with lifting capacity of 2000 tons was never built, and Type 648 repair ship was the one only completed.",
  "specs": [
    {
      "k": "crew",
      "v": 105,
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "length_m",
      "v": 84,
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "beam_m",
      "v": 78.7,
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Draft",
      "section": "dims",
      "v": "5.0m",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "displacement_t",
      "v": 1962,
      "src": [
        "weg-type-648"
      ],
      "conf": "medium",
      "label": "Displacement (full load)"
    },
    {
      "k": "propulsion",
      "v": "2 x D39",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Engine power",
      "section": "mobility",
      "v": "1,850 total bhp; 2 shafts",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "range_km",
      "v": 3704,
      "src": [
        "weg-type-648"
      ],
      "conf": "medium",
      "note": "2,000 Nautical Miles"
    },
    {
      "k": "speed_kt",
      "v": 28,
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Endurance",
      "section": "mobility",
      "v": "20 days",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Navigation Radar",
      "section": "firecontrol",
      "v": "1 Type 756 navigation radar",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Active Protection System",
      "section": "protection",
      "v": "Anti-Aircraft Gun and 14.4mm Machine Guns",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "NBC Water Washdown System",
      "section": "protection",
      "v": "Yes",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    },
    {
      "k": "armament",
      "v": "Type 61",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium"
    }
  ],
  "payloads": [
    {
      "name": "Type 61",
      "role": "Anti-Aircraft Gun",
      "src": [
        "weg-type-648"
      ],
      "conf": "medium",
      "caps": {
        "Type": "Anti-Aircraft Gun",
        "Caliber": "25mm",
        "Rate of fire": "Compact: 800~900 round/min"
      },
      "range_km": 3,
      "qty": "4 x Type 61 Twin 25mm Anti-Aircraft Gun"
    }
  ],
  "variants": [
    {
      "name": "Dong-Xiu 911",
      "text": "Commissioned: 1985 Status: Active",
      "src": [
        "weg-type-648"
      ]
    }
  ],
  "art": "destroyer",
  "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/type-648.html",
  "sources": {
    "weg-type-648": {
      "title": "Type 648 Class (Dadao Class) Chinese Submarine Repair Ship",
      "publisher": "U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)",
      "url": "https://odin.t2com.army.mil/WEG/Asset/Type_648_Class_Dadao_Class_Chinese_Submarine_Repair_Ship",
      "published": "2026-03-20",
      "tier": 1,
      "checked": "2026-10-10"
    }
  }
}