{
  "title": "Chenango",
  "era": "Early sailing form, c.1862–1869",
  "version": "1.1",
  "modelStatus": "Interpretive reconstruction; no original lines plan recovered",
  "detailLevel": "full",
  "units": "metres",
  "axes": {
    "up": "+Y",
    "bow": "-X",
    "starboard": "+Z"
  },
  "historicalDimensions": {
    "lengthFeet": 150,
    "beamFeet": 28,
    "depthOfHoldFeet": 11.5,
    "beamAndDepthInferred": true
  },
  "geometryReference": {
    "hullBowX": -22.86,
    "hullSternX": 22.86,
    "deckY": 3.7,
    "waterlineY": 2.65,
    "waterlineIsInferred": true
  },
  "bounds": {
    "min": [
      -29.279232409147447,
      0.0050000000000000044,
      -7.568896
    ],
    "max": [
      22.92633849527037,
      31.503062021433244,
      7.568896
    ]
  },
  "triangleCount": 74524,
  "trianglesByGroup": {
    "hull": 12668,
    "bulwarks": 9404,
    "fittings": 3504,
    "deck": 6648,
    "propulsion": 52,
    "anchors": 636,
    "deckhouses": 1032,
    "cargo_hatches": 24,
    "hatch_covers": 336,
    "ship_boat": 1816,
    "spars": 5540,
    "standing_rigging": 3468,
    "sails": 25364,
    "running_rigging": 4032
  },
  "drawCalls": 50,
  "mastCount": 3,
  "supportsSails": true,
  "visibilityNodes": {
    "sails": "sails"
  },
  "deployedSailCount": 9,
  "inferredFeatures": [
    "Underwater hull lines and draft",
    "Exact colors, fittings, hatch layout and rigging routes",
    "Absolute spar heights and sail shapes"
  ],
  "configurationCaveat": "Early bark interpretation; catalogue instead calls it a barkentine. Rig is uncertain. Beam/depth are provisional.",
  "sources": [
    {
      "title": "U.S. Life-Saving Service, 1876 report, table G2 casualty entry",
      "url": "https://fraser.stlouisfed.org/files/docs/publications/treasar/pages/60755_1875-1879.pdf",
      "use": "Primary period listing identifies official number 4335 as an American bark; September casualty is separate from final November loss"
    },
    {
      "title": "Great Lakes Shipwreck Files, C, CHENANGO entry",
      "url": "https://greatlakesrex.wordpress.com/c/",
      "use": "Built 1862 as bark, approximate 150 ft length, later barge service and 1875 loss"
    },
    {
      "title": "Alger Underwater Preserve historical marker transcription",
      "url": "https://www.hmdb.org/m.asp?m=154896",
      "use": "Approximate length and loss; image of Marie explicitly represents a similar vessel, not Chenango"
    }
  ],
  "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": [
    "Built at Cleveland by Lafrinier in 1862, approximately 150 ft long. [Great Lakes Shipwreck Files, C, CHENANGO entry](https://greatlakesrex.wordpress.com/c/)",
    "Recorded as a bark before later schooner-barge service; exact rig and conversion date remain uncertain. [Great Lakes Shipwreck Files, C, CHENANGO entry](https://greatlakesrex.wordpress.com/c/)"
  ]
}