{
  "title": "Nahant",
  "era": "One-deck wooden bulk freighter, 1873–1897",
  "version": "1.1",
  "modelStatus": "Interpretive reconstruction; no original lines plan recovered",
  "detailLevel": "full",
  "units": "metres",
  "axes": {
    "up": "+Y",
    "bow": "-X",
    "starboard": "+Z"
  },
  "historicalDimensions": {
    "lengthFeet": 213.3,
    "beamFeet": 35,
    "depthOfHoldFeet": 16.2,
    "beamInferred": false,
    "holdDepthUnknown": false,
    "dimensionsSourceQuality": "Selected documentary baseline; see vessel research notes for length and beam conflicts"
  },
  "geometryReference": {
    "hullBowX": -32.50692,
    "hullSternX": 32.50692,
    "deckY": 5.25,
    "waterlineY": 3.75,
    "waterlineIsInferred": true
  },
  "bounds": {
    "min": [
      -32.572643688040614,
      0.0050000000000000044,
      -5.419000000000001
    ],
    "max": [
      32.72742,
      28.753747066462807,
      5.419000000000001
    ]
  },
  "triangleCount": 43944,
  "trianglesByGroup": {
    "hull": 12668,
    "bulwarks": 9740,
    "fittings": 2964,
    "deck": 8818,
    "propulsion": 206,
    "anchors": 636,
    "deckhouses": 252,
    "cabin_roofs": 120,
    "windows": 540,
    "machinery": 392,
    "standing_rigging": 2304,
    "spars": 1904,
    "cargo_hatches": 480,
    "hatch_covers": 864,
    "ventilators": 240,
    "ship_boat": 1816
  },
  "drawCalls": 44,
  "mastCount": 2,
  "supportsSails": false,
  "visibilityNodes": {
    "hatches": "hatch_covers"
  },
  "deployedSailCount": 0,
  "inferredFeatures": [
    "Eight low hatch covers, their spacing, two cargo masts, compact end houses and one aft funnel are inferred from contemporary wooden bulk carriers.",
    "D.M. Wilson is a vessel-class comparison, not a photographed Nahant. The cited NOAA page shows an underwater bow; no claim that it supplies an inspected afloat portrait is retained.",
    "Cabin windows, fittings, paint and loaded waterline are interpreted."
  ],
  "configurationCaveat": "The enrollment record identifies a one-deck bulk freighter, rather than the catalogue’s package-boat label. Eight hatches, two cargo masts, compact houses and aft funnel are contemporary comparisons; no inspected own-vessel portrait fixes the arrangement. Deaths in the 1897 fire are reported as two or three.",
  "revisedDate": "2026-09-08",
  "revisionNote": "Corrected the September 2026 audit findings and distinguished documentary evidence, interpretation and unresolved conflicts.",
  "documentedFeatures": [
    "The enrollment-based history lists a wooden Great Lakes bulk freighter with one deck, built by George W. Jones at Detroit and launched April 24, 1873; US 18766, 213.3 × 35 × 16.2 ft. [Great Lakes Vessel History](https://www.greatlakesvesselhistory.com/histories-by-name/n/nahant).",
    "Nahant burned November 29, 1897 at Chicago & North Western ore dock no. 4, Escanaba, with iron ore aboard; the dock also burned. [Vessel history](https://www.greatlakesvesselhistory.com/histories-by-name/n/nahant).",
    "Swayze records two or three deaths. A contemporary report names Jacob Bossart and a deckhand, both of Cleveland. The former one-death catalogue value is not retained. [Swayze N](https://greatlakesrex.wordpress.com/n/), [Maritime History record 55897](https://images.maritimehistoryofthegreatlakes.ca/55897/data)."
  ],
  "sources": [
    {
      "title": "Enrollment-based history",
      "url": "https://www.greatlakesvesselhistory.com/histories-by-name/n/nahant",
      "use": "See the cited evidence and uncertainty sections in the research notes."
    },
    {
      "title": "Swayze N",
      "url": "https://greatlakesrex.wordpress.com/n/",
      "use": "See the cited evidence and uncertainty sections in the research notes."
    },
    {
      "title": "Contemporary death report",
      "url": "https://images.maritimehistoryofthegreatlakes.ca/55897/data",
      "use": "See the cited evidence and uncertainty sections in the research notes."
    },
    {
      "title": "NOAA D.M. Wilson comparison record",
      "url": "https://thunderbay.noaa.gov/shipwrecks/d_m_wilson.html",
      "use": "See the cited evidence and uncertainty sections in the research notes."
    }
  ],
  "builder": "George W. Jones, Detroit, 1873"
}