{
  "method": "Exact original CAD facets plus ruled triangulated top strips and planar aft cap; no original facet moved or removed",
  "coordinate_units": "mm; original Z not waterline",
  "skin_faces": 19447,
  "skin_boundary_edges": 319,
  "top_triangles": 265,
  "aft_outline_vertices": 54,
  "aft_mesh_triangles": 52,
  "watertight": true,
  "consistent_winding": true,
  "euler_number": 2,
  "volume_m3": 25.21681889078374,
  "centroid_original_m": [
    6.158630422622779,
    2.990785210373685,
    0.7099339940235505
  ],
  "area_closed_m2": 80.21929525204726,
  "top_closure_min_original_z_m": 0.439900419,
  "keel_original_z_m": -0.48610000600000003,
  "limitations": [
    "Artificial top closure is NOT the actual deck or an approved flood boundary",
    "Upright hydrostatic cuts must stay below the lowest top closure; heel requires explicit closure-intersection check",
    "Fully enclosed volume is NOT payload or permissible displacement",
    "The transom cap is a geometric closure, not a designed watertight bulkhead"
  ]
}