{
 "version": 2,
 "date": "2026-10-12",
 "file": "data/wrecks.v2.bin",
 "bytes": 230371,
 "sha256": "5e3b45324e7b978ae06b512c825f2a32538d923aba1653a77dd5207b06f923a2",
 "n": 1666,
 "source": {
  "wikidata": "Wikidata (CC0): instances of shipwreck (Q852190) with coordinates (P625), plus watercraft whose significant events (P793) include a sinking-type event (shipwrecking, sinking, scuttling, grounding, capsizing, torpedo attack, wreck found) with coordinates.",
  "queries": {
   "shipwrecks": "?w wdt:P31 wd:Q852190 .",
   "extra": "SELECT DISTINCT ?w WHERE { VALUES ?sinkEv { wd:Q906512 wd:Q30880545 wd:Q1786766 wd:Q14920473 wd:Q1522772 wd:Q111177852 wd:Q852190 wd:Q50295027 } ?w wdt:P793 ?sinkEv ; wdt:P625 [] . ?w wdt:P31/wdt:P279* wd:Q1229765 . FILTER NOT EXISTS { ?w wdt:P31 wd:Q852190 } }"
  },
  "seas": "Marine Regions (VLIZ, CC BY 4.0): IHO Sea Areas, point in polygon (nearest polygon within 25 km for positions on a coastline).",
  "dem": "NOAA NCEI DEM global mosaic (ETOPO 2022 15 arc-second, and NCEI's finer coastal and Great Lakes DEMs where they exist), via its public ImageServer getSamples."
 },
 "read": 31565,
 "rule": "documented shipwrecks: a vessel (not a wharf, pier, site, find, obstruction, aircraft, or an unnamed or uncertain record), placed in time (a year lost, a conflict it served in, or an ancient or medieval period), with at least two of: a date of loss, a vessel type, a Wikipedia article, a year built, a recorded cause or conflict, a photo",
 "mapped": 31066,
 "undocumented": 29400,
 "previous": [
  {
   "version": 1,
   "n": 31067,
   "sha256": "89da37c41564ce1fc93c843af4fc61521b21b5e0f3b10fd29ef98eeac55427d5",
   "rule": "every item Wikidata calls a shipwreck with coordinates, plus watercraft with a recorded sinking; minus raised, broken up, on land, duplicates"
  }
 ],
 "excluded": {
  "total": 499,
  "reasons": {
   "broken up (no wreck remains)": 19,
   "raised (no wreck remains on the seabed)": 13,
   "raised and kept in a museum (the position is the museum)": 12,
   "position on land (no water within 4 km in the DEM)": 420,
   "duplicate (archaeological site of)": 2,
   "duplicate (same name within 5 km)": 33
  },
  "famous": [
   [
    35926,
    "HMS Beagle",
    "broken up (no wreck remains)"
   ],
   [
    219821,
    "Vasa",
    "raised (no wreck remains on the seabed)"
   ],
   [
    190542,
    "Costa Concordia",
    "broken up (no wreck remains)"
   ],
   [
    544894,
    "Mary Rose",
    "raised and kept in a museum (the position is the museum)"
   ],
   [
    1131630,
    "HMS Repulse",
    "position on land (no water within 4 km in the DEM)"
   ],
   [
    165142,
    "SS Cap Arcona",
    "broken up (no wreck remains)"
   ],
   [
    539614,
    "H. L. Hunley",
    "raised and kept in a museum (the position is the museum)"
   ],
   [
    1032062,
    "HMS Nelson",
    "broken up (no wreck remains)"
   ],
   [
    3018259,
    "Wreck of the Titanic",
    "duplicate of Q25173 (archaeological site of)"
   ],
   [
    705582,
    "SMS Königsberg",
    "position on land (no water within 4 km in the DEM)"
   ],
   [
    495397,
    "ROKS Cheonan",
    "raised (no wreck remains on the seabed)"
   ],
   [
    1060067,
    "Soviet submarine K-129",
    "raised (no wreck remains on the seabed)"
   ],
   [
    1153029,
    "Varyag",
    "broken up (no wreck remains)"
   ],
   [
    1753417,
    "SS Sultana",
    "position on land (no water within 4 km in the DEM)"
   ],
   [
    2004262,
    "USS Arizona Memorial",
    "raised and kept in a museum (the position is the museum)"
   ],
   [
    683457,
    "Wilhelm Bauer",
    "raised and kept in a museum (the position is the museum)"
   ]
  ]
 },
 "counts": {
  "canmore": 109,
  "coflein": 56,
  "nhle": 11,
  "dated": 1292,
  "eraKnown": 1666,
  "enwiki": 1491,
  "image": 991,
  "approx": 937,
  "sea": 1617,
  "lake": 39,
  "war": 1290,
  "protected": 143,
  "depth": {
   "none": 0,
   "recorded": 1,
   "point": 1520,
   "near1": 135,
   "near4": 10
  },
  "classes": {
   "hull": 70,
   "sail": 53,
   "galleon": 18,
   "steamer": 188,
   "warship": 422,
   "carrier": 40,
   "submarine": 785,
   "small": 16,
   "galley": 5,
   "paddle": 20,
   "liner": 49
  },
  "eras": {
   "unknown": 0,
   "ancient": 7,
   "sail": 40,
   "steam": 162,
   "ww1": 174,
   "ww2": 1115,
   "modern": 168
  },
  "wp": {
   "1+": 1558,
   "5+": 1225,
   "10+": 612,
   "20+": 79
  }
 }
}