{
  "title": "W.S. Crosthwaite",
  "era": "Earlier three-masted sailing career",
  "version": "1.1",
  "modelStatus": "Interpretive reconstruction; no original lines plan recovered",
  "detailLevel": "full",
  "units": "metres",
  "axes": {
    "up": "+Y",
    "bow": "-X",
    "starboard": "+Z"
  },
  "historicalDimensions": {
    "lengthFeet": 198,
    "beamFeet": 35,
    "depthOfHoldFeet": 13,
    "beamInferred": false,
    "holdDepthUnknown": false,
    "dimensionsSourceQuality": "Selected documentary baseline; see vessel research notes for length and beam conflicts"
  },
  "geometryReference": {
    "hullBowX": -30.1752,
    "hullSternX": 30.1752,
    "deckY": 4.8,
    "waterlineY": 3.35,
    "waterlineIsInferred": true
  },
  "bounds": {
    "min": [
      -38.03801815342481,
      0.0050000000000000044,
      -5.419000000000001
    ],
    "max": [
      30.49497028451886,
      35.803492741986496,
      5.419000000000001
    ]
  },
  "triangleCount": 74476,
  "trianglesByGroup": {
    "hull": 12950,
    "bulwarks": 9682,
    "fittings": 3164,
    "deck": 8852,
    "steering": 424,
    "anchors": 636,
    "deckhouses": 2440,
    "skylights": 64,
    "spars": 12236,
    "standing_rigging": 3432,
    "sails": 16044,
    "running_rigging": 2304,
    "cargo_hatches": 120,
    "hatch_covers": 312,
    "ship_boat": 1816
  },
  "drawCalls": 52,
  "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 original three-mast rig and dimensions are documented. No ship-specific portrait was accessible; the closely sized Miztec informs the low cargo hull and sailing arrangement. Sail inventory, cabin, hatch layout and colors are inferred. This is before Crosthwaite was reduced to a towbarge.",
  "sources": [
    {
      "title": "Historical loss compilation, C entries",
      "url": "https://greatlakesrex.wordpress.com/c/"
    },
    {
      "title": "Inspected comparison photograph: Miztec",
      "url": "https://commons.wikimedia.org/wiki/File:Miztec_-_3_masted.jpg"
    },
    {
      "title": "Miztec dimensions and historical bibliography",
      "url": "https://en.wikipedia.org/wiki/Miztec_%28schooner_barge%29"
    }
  ],
  "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": [
    "The compilation identifies US80344 as a wooden three-masted schooner built in 1873. [Historical loss compilation, C entries](https://greatlakesrex.wordpress.com/c/)",
    "Reported dimensions 198×35×13 ft; later reduced to a towbarge. [Historical loss compilation, C entries](https://greatlakesrex.wordpress.com/c/)"
  ]
}