{
  "title": "Herman H. Hettler",
  "era": "c.1915 working appearance",
  "version": "1.1",
  "modelStatus": "Interpretive reconstruction; no original lines plan recovered",
  "detailLevel": "full",
  "units": "metres",
  "axes": {
    "up": "+Y",
    "bow": "-X",
    "starboard": "+Z"
  },
  "historicalDimensions": {
    "lengthFeet": 200,
    "beamFeet": 35,
    "depthOfHoldFeet": 13.25,
    "beamAndDepthInferred": false
  },
  "geometryReference": {
    "hullBowX": -30.48,
    "hullSternX": 30.48,
    "deckY": 4.3,
    "waterlineY": 3.05,
    "waterlineIsInferred": true
  },
  "bounds": {
    "min": [
      -35.50257068462357,
      0.0050000000000000044,
      -5.419000000000001
    ],
    "max": [
      30.544621181741277,
      26.322248979427375,
      5.419000000000001
    ]
  },
  "triangleCount": 57922,
  "trianglesByGroup": {
    "hull": 12668,
    "bulwarks": 9668,
    "fittings": 2940,
    "deck": 8344,
    "propulsion": 208,
    "anchors": 636,
    "deckhouses": 2886,
    "pilothouse": 920,
    "cargo_hatches": 36,
    "hatch_covers": 540,
    "deck_cargo": 13752,
    "machinery": 744,
    "spars": 1624,
    "standing_rigging": 1140,
    "ship_boat": 1816
  },
  "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": "c.1915 photo appearance, not original Walter Vail branding",
  "sources": [
    {
      "title": "Detroit Historical Society, Pesha glass plate, c.1915, 2011.040.289",
      "url": "https://www.detroithistorical.org/learn/online-research/collection/photo/negative-glass-plate-327",
      "use": "Primary visual evidence for two working masts, bridge canopy, aft funnel, cabin and deck lumber"
    },
    {
      "title": "3D Shipwrecks: Herman Hettler",
      "url": "https://3dshipwrecks.org/shipwreck-herman-hettler/",
      "use": "1890/1926 dates, wood construction, 200 x 35 x 13.25 ft dimensions"
    }
  ],
  "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 in 1890; survey dimensions 200×35×13.25 ft. [3D Shipwrecks: Herman Hettler](https://3dshipwrecks.org/shipwreck-herman-hettler/)"
  ]
}