{
  "title": "Yosemite",
  "era": "Interpreted later lumber-carrying 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": 152,
    "beamFeet": 29,
    "depthOfHoldFeet": 10,
    "beamInferred": false,
    "holdDepthUnknown": false,
    "dimensionsSourceQuality": "Selected documentary baseline; see vessel research notes for length and beam conflicts"
  },
  "geometryReference": {
    "hullBowX": -23.1648,
    "hullSternX": 23.1648,
    "deckY": 4.0,
    "waterlineY": 2.8,
    "waterlineIsInferred": true
  },
  "bounds": {
    "min": [
      -23.234259742876407,
      0.0050000000000000044,
      -4.504600000000001
    ],
    "max": [
      23.458799999999997,
      27.00383657032573,
      4.504600000000001
    ]
  },
  "triangleCount": 56494,
  "trianglesByGroup": {
    "hull": 12668,
    "bulwarks": 9404,
    "fittings": 2868,
    "deck": 7254,
    "propulsion": 206,
    "anchors": 636,
    "deckhouses": 6720,
    "pilothouse": 36,
    "steering": 412,
    "stern_gallery": 1282,
    "machinery": 392,
    "standing_rigging": 2280,
    "spars": 1808,
    "cargo_hatches": 120,
    "hatch_covers": 288,
    "deck_cargo": 8064,
    "ship_boat": 1816,
    "ventilators": 240
  },
  "drawCalls": 56,
  "mastCount": 2,
  "supportsSails": false,
  "visibilityNodes": {
    "cargo": "deck_cargo"
  },
  "deployedSailCount": 0,
  "inferredFeatures": [
    "Underwater hull lines and draft",
    "Exact colors, fittings, hatch layout and rigging routes"
  ],
  "configurationCaveat": "Dimensions, steam propulsion and lumber-carrying work are documented. No ship-specific portrait was accessible. The nearby-era W.P. Thew informs the forward pilothouse, aft machinery house and two bare masts; these remain inferences about Yosemite. Exact refit state and paint are unknown.",
  "sources": [
    {
      "title": "Historical loss compilation, X–Z entries",
      "url": "https://greatlakesrex.wordpress.com/x/"
    },
    {
      "title": "Marsh Collection: reproduced 1881 shipping report",
      "url": "https://www.marshcollection.org/wp-content/uploads/Yolume-II-Number-1.pdf"
    },
    {
      "title": "NOAA: W.P. Thew comparison vessel",
      "url": "https://thunderbay.noaa.gov/shipwrecks/w_p_thew.html"
    },
    {
      "title": "Inspected comparison photograph: W.P. Thew",
      "url": "https://commons.wikimedia.org/wiki/File:W.P._Thew.png"
    }
  ],
  "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 propeller freighter US27541, built by G.Fordham at Sandusky in 1867. [Historical loss compilation, X–Z entries](https://greatlakesrex.wordpress.com/x/)",
    "Reported dimensions 152×29×10 ft; distinct from the Pacific sidewheeler. [Historical loss compilation, X–Z entries](https://greatlakesrex.wordpress.com/x/)"
  ]
}