{
 "asset": "Manta: a third Tender (sub tub) after the user's reference picture of 2026-10-14; working name, not the user's",
 "units": "Unreal cm; ue = (-blender_y, -blender_x, blender_z) * 100. Origin: as the Kazah's, 9 cm behind the clamp axis on the Tender's centre line; nose +X, port -Y, up +Z",
 "fbx": {
  "forward": "-Y",
  "up": "Z",
  "unreal_import": "Force Front X Axis on, Convert Scene on, scale 1"
 },
 "size_m": {
  "length_incl_boom": 9.5,
  "span": 4.156,
  "height": 2.608
 },
 "bounds_ue_cm": {
  "min": [
   -472.0,
   -207.8,
   -107.0
  ],
  "max": [
   478.0,
   207.8,
   153.8
  ]
 },
 "parts": {
  "SM_Manta_Hull": {
   "file": "SM_Manta_Hull.fbx",
   "role": "static: skin, fins, strakes, keel, duct, mast, window frames, holder clips",
   "pivot_ue_cm": [
    -0.0,
    -0.0,
    0.0
   ],
   "parent": null,
   "local_bounds_ue_cm": {
    "min": [
     -420.0,
     -207.81,
     -107.0
    ],
    "max": [
     478.0,
     207.81,
     153.77
    ]
   },
   "triangles": 50460,
   "materials": [
    "MANTA | Hull paint",
    "MANTA | Panel seam",
    "MANTA | Sensor glass",
    "MANTA | Graphite",
    "MANTA | Chrome",
    "MANTA | Steel",
    "MANTA | Rubber",
    "MANTA | Yellow marking",
    "MANTA | Lamp lens",
    "MANTA | Lamp light"
   ],
   "ucx": 12
  },
  "SM_Manta_Cabin": {
   "file": "SM_Manta_Cabin.fbx",
   "role": "static: cabin lining, deck, seat, console, lights (seen through the windows)",
   "pivot_ue_cm": [
    -0.0,
    -0.0,
    0.0
   ],
   "parent": null,
   "local_bounds_ue_cm": {
    "min": [
     120.5,
     -139.84,
     -64.02
    ],
    "max": [
     422.83,
     139.84,
     79.78
    ]
   },
   "triangles": 14376,
   "materials": [
    "MANTA | Cabin panel",
    "MANTA | Cabin floor",
    "MANTA | Seat",
    "MANTA | Screen",
    "MANTA | Cabin light",
    "MANTA | Cabin graphite",
    "MANTA | Cabin steel"
   ],
   "ucx": 0
  },
  "SM_Manta_Glass": {
   "file": "SM_Manta_Glass.fbx",
   "role": "static, translucent: the two cabin windows",
   "pivot_ue_cm": [
    -0.0,
    -0.0,
    0.0
   ],
   "parent": null,
   "local_bounds_ue_cm": {
    "min": [
     150.0,
     -140.37,
     -57.68
    ],
    "max": [
     410.0,
     140.37,
     6.02
    ]
   },
   "triangles": 3008,
   "materials": [
    "MANTA | Glass"
   ],
   "ucx": 0
  },
  "SM_Manta_Rotor": {
   "file": "SM_Manta_Rotor.fbx",
   "role": "rotor: spins about Unreal X (the Tender's long axis)",
   "pivot_ue_cm": [
    -380.5,
    -0.0,
    0.0
   ],
   "parent": null,
   "local_bounds_ue_cm": {
    "min": [
     -9.5,
     -49.0,
     -47.35
    ],
    "max": [
     9.5,
     41.06,
     47.32
    ]
   },
   "triangles": 524,
   "materials": [
    "MANTA | Impeller alloy",
    "MANTA | Graphite"
   ],
   "ucx": 0
  },
  "SM_Manta_ToolBoom": {
   "file": "SM_Manta_ToolBoom.fbx",
   "role": "tool boom: swings about Unreal Z on its hinge",
   "pivot_ue_cm": [
    -335.0,
    72.0,
    28.0
   ],
   "parent": null,
   "local_bounds_ue_cm": {
    "min": [
     -108.0,
     -8.0,
     -9.0
    ],
    "max": [
     8.0,
     8.0,
     9.0
    ]
   },
   "triangles": 1020,
   "materials": [
    "MANTA | Steel",
    "MANTA | Graphite",
    "MANTA | Hull paint",
    "MANTA | Yellow marking"
   ],
   "ucx": 0
  },
  "SM_Manta_ToolBit": {
   "file": "SM_Manta_ToolBit.fbx",
   "role": "drill and suction head: spins about its own long axis (Unreal X at rest)",
   "pivot_ue_cm": [
    -443.0,
    72.0,
    28.0
   ],
   "parent": "SM_Manta_ToolBoom",
   "local_bounds_ue_cm": {
    "min": [
     -29.0,
     -8.5,
     -8.5
    ],
    "max": [
     -0.5,
     8.5,
     8.5
    ]
   },
   "triangles": 388,
   "materials": [
    "MANTA | Steel",
    "MANTA | Graphite",
    "MANTA | Yellow marking"
   ],
   "ucx": 0
  }
 },
 "motion": {
  "SM_Manta_Rotor": {
   "axis": "Unreal X",
   "blender_property": "Manta_Root['rotor_turns'] (turns)"
  },
  "SM_Manta_ToolBoom": {
   "axis": "Unreal Z through its pivot",
   "range_deg_blender": [
    -10,
    45
   ],
   "note": "Blender +deg about Z swings the boom outboard (to starboard) = Unreal yaw -deg (the axis flip); the negative end is toward the duct"
  },
  "SM_Manta_ToolBit": {
   "axis": "its local Unreal X (along the boom)",
   "blender_property": "Manta_Root['bit_turns'] (turns)"
  }
 },
 "clamp_interface": {
  "axis_ue_cm": [
   9.0,
   -0.0,
   0.0
  ],
  "note": "the docking arm's head hangs the Tender here, wrist 194 cm over the origin; four holder clips at 45/135/225/315 deg, wall r 53.5 cm z 118-133.5, hook lip r 55.2 cm, top z 137.5 (the Kazah's collar profile, no hatch)",
  "clips": {
   "centre": [
    0.0,
    -0.09000000357627869
   ],
   "azimuths_deg": [
    45.0,
    135.0,
    225.0,
    315.0
   ],
   "half_width_deg": 20.0,
   "wall_r": 0.535,
   "lip_r": 0.552,
   "top_z": 1.375,
   "pedestal_top_z": 1.15
  }
 },
 "sockets_ue_cm": {
  "SOCKET_Clamp": [
   9.0,
   -0.0,
   194.0
  ],
  "SOCKET_Lamp_L": [
   362.0,
   -42.0,
   -45.0
  ],
  "SOCKET_Lamp_R": [
   362.0,
   42.0,
   -45.0
  ],
  "SOCKET_Pilot_Eye": [
   242.0,
   -0.0,
   65.0
  ],
  "SOCKET_Tool": [
   -472.0,
   72.0,
   28.0
  ],
  "SOCKET_Thrust": [
   -415.0,
   -0.0,
   0.0
  ]
 },
 "textures": {
  "T_Manta_Exterior_Masks": "UV0, non-colour: R occlusion, G edges, B crevices (hull, glass, rotor, boom, bit)",
  "T_Manta_Exterior_BevelNormal": "UV0, normal (OpenGL, as Blender bakes it; flip green in Unreal)",
  "T_Manta_Cabin_Masks": "UV0 of the cabin",
  "T_Manta_Cabin_BevelNormal": "UV0 of the cabin",
  "T_Manta_Screens": "UV0 of the cabin's three screens, emissive",
  "tiling": "pack ModSci_Engineer Base/ScratchedMetal, Base/StainedSteel, FloorPanel_A, Base/Glass on UV1 (metres); seat: CC0 leather_white (models/vessel-interior/source_textures)"
 }
}