{
  "title": "Maid of the Mist",
  "era": "Comparative sailing form, 1863–1878",
  "version": "1.1",
  "modelStatus": "Interpretive reconstruction; no original lines plan recovered",
  "detailLevel": "full",
  "units": "metres",
  "axes": {
    "up": "+Y",
    "bow": "-X",
    "starboard": "+Z"
  },
  "historicalDimensions": {
    "lengthFeet": 90,
    "beamFeet": 21,
    "depthOfHoldFeet": null,
    "beamInferred": false,
    "holdDepthUnknown": true,
    "dimensionsSourceQuality": "Selected documentary baseline; see vessel research notes for length and beam conflicts"
  },
  "geometryReference": {
    "hullBowX": -13.716000000000001,
    "hullSternX": 13.716000000000001,
    "deckY": 2.9,
    "waterlineY": 1.9,
    "waterlineIsInferred": true
  },
  "bounds": {
    "min": [
      -18.12483279849465,
      0.0050000000000000044,
      -3.2854
    ],
    "max": [
      13.801000000000002,
      24.90281080163521,
      3.2854
    ]
  },
  "triangleCount": 54432,
  "trianglesByGroup": {
    "hull": 12950,
    "bulwarks": 9106,
    "fittings": 2772,
    "deck": 5252,
    "propulsion": 52,
    "anchors": 636,
    "deckhouses": 840,
    "skylights": 56,
    "spars": 5056,
    "standing_rigging": 2316,
    "sails": 11320,
    "running_rigging": 1536,
    "cargo_hatches": 120,
    "hatch_covers": 192,
    "ship_boat": 1816,
    "steering": 412
  },
  "drawCalls": 55,
  "mastCount": 2,
  "supportsSails": true,
  "visibilityNodes": {
    "sails": "sails"
  },
  "deployedSailCount": 4,
  "inferredFeatures": [
    "Underwater hull lines and draft",
    "Exact colors, fittings, hatch layout and rigging routes",
    "Absolute spar heights and sail shapes"
  ],
  "configurationCaveat": "NOAA establishes two masts, wooden construction and scale. Hull lines, gaff rig, cabin and hatches use contemporary Great Lakes schooner comparisons; no complete portrait was recovered.",
  "sources": [
    {
      "title": "NOAA vessel record",
      "url": "https://thunderbay.noaa.gov/shipwrecks/maid.html",
      "use": "Identity, dimensions, history and surviving evidence"
    },
    {
      "title": "NOAA Defiance",
      "url": "https://thunderbay.noaa.gov/shipwrecks/defiance.html",
      "use": "Earlier regional two-masted wooden cargo schooner comparison"
    },
    {
      "title": "NOAA James H. Hall",
      "url": "https://thunderbay.noaa.gov/shipwrecks/james_h_hall.html",
      "use": "Closely sized later schooner photograph; comparative rig and deck practice, not ship-specific evidence"
    }
  ],
  "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 two-masted schooner built at St.Clair in 1863. [NOAA vessel record](https://thunderbay.noaa.gov/shipwrecks/maid.html)",
    "NOAA catalogue dimensions 90×21 ft. [NOAA vessel record](https://thunderbay.noaa.gov/shipwrecks/maid.html)"
  ]
}