{
  "title": "Marquette",
  "era": "Original c.1869 sailing form",
  "version": "1.1",
  "modelStatus": "Interpretive reconstruction; no original lines plan recovered",
  "detailLevel": "full",
  "units": "metres",
  "axes": {
    "up": "+Y",
    "bow": "-X",
    "starboard": "+Z"
  },
  "historicalDimensions": {
    "lengthFeet": 139,
    "beamFeet": 26,
    "depthOfHoldFeet": 11,
    "beamAndDepthInferred": false
  },
  "geometryReference": {
    "hullBowX": -21.183600000000002,
    "hullSternX": 21.183600000000002,
    "deckY": 3.65,
    "waterlineY": 2.65,
    "waterlineIsInferred": true
  },
  "bounds": {
    "min": [
      -27.9804047923643,
      0.0050000000000000044,
      -4.0474000000000006
    ],
    "max": [
      21.249991696999995,
      30.30294487207675,
      4.0474000000000006
    ]
  },
  "triangleCount": 67280,
  "trianglesByGroup": {
    "hull": 12668,
    "bulwarks": 9356,
    "fittings": 3480,
    "deck": 6108,
    "propulsion": 52,
    "anchors": 636,
    "deckhouses": 936,
    "cargo_hatches": 120,
    "hatch_covers": 288,
    "ship_boat": 1816,
    "spars": 10004,
    "standing_rigging": 3468,
    "sails": 16044,
    "running_rigging": 2304
  },
  "drawCalls": 51,
  "mastCount": 3,
  "supportsSails": true,
  "visibilityNodes": {
    "sails": "sails"
  },
  "deployedSailCount": 5,
  "inferredFeatures": [
    "Underwater hull lines and draft",
    "Exact colors, fittings, hatch layout and rigging routes",
    "Absolute spar heights and sail shapes"
  ],
  "configurationCaveat": "The 1869 schooner, official number 90142; not the later steamer of the same name. Original rig interpretation; details of the 1871 rebuild are unresolved. Canonical location text conflicts with the west Grand Island position and requires review.",
  "sources": [
    {
      "title": "Great Lakes Shipwreck Files, M: Marquette, official 90142",
      "url": "https://greatlakesrex.wordpress.com/m/",
      "use": "1869 schooner dimensions, builder, rebuild and loss; not later same-name steamer"
    }
  ],
  "revisedDate": "2026-09-08",
  "revisionNote": "Added sourced documentary features and repaired metadata and research-note formatting; this collection cleanup is not a new full historical or geometry audit.",
  "documentedFeatures": [
    "Wooden schooner US90142, built at Detroit by J.M.Jones in 1869. [Great Lakes Shipwreck Files, M: Marquette, official 90142](https://greatlakesrex.wordpress.com/m/)",
    "Reported dimensions 139×26×11 ft; distinct from the later steamship. [Great Lakes Shipwreck Files, M: Marquette, official 90142](https://greatlakesrex.wordpress.com/m/)"
  ]
}