Barracuda (attack_sub) - /pa/units/sea/attack_sub/attack_sub.json

Submarine - High damage. Cannot be targeted by cannons. Attacks sea and undersea targets.
{
  "display_name": "Barracuda",
  "description": "!LOC:Submarine - High damage. Cannot be targeted by cannons. Attacks sea and undersea targets.",
  "TEMP_texelinfo": 8.37977,
  "audio": {
    "loops": {
      "move": {
        "cue": "/SE/Movement/sea/attack_sub_loop",
        "flag": "vel_changed",
        "should_start_func": "is_moving",
        "should_stop_func": "is_not_moving"
      }
    }
  },
  "base_spec": "/pa/units/sea/base_ship/base_ship.json",
  "build_metal_cost": 500,
  "events": {
    "build_complete": {
      "audio_cue": "/SE/Build_Complete/sea"
    },
    "fired": {
      "audio_cue": "/SE/Weapons/sea/attack_sub_fire"
    },
    "died": {
      "audio_cue": "/SE/Death/Sea_sub",
      "effect_spec": "/pa/effects/specs/default_explosion_naval_sub.pfx",
      "effect_scale": 0.7
    }
  },
  "fx_offsets": [
    {
      "type": "moving_forward",
      "filename": "/pa/units/sea/attack_sub/attack_sub_wake.pfx"
    }
  ],
  "guard_layer": "WL_AnyWater",
  "max_health": 550,
  "mesh_bounds": [
    8,
    17,
    4
  ],
  "model": {
    "filename": "/pa/units/sea/attack_sub/attack_sub.papa",
    "arrows": 5
  },
  "navigation": {
    "type": "underwater",
    "acceleration": 40,
    "brake": 140,
    "move_speed": 14,
    "turn_speed": 60,
    "turn_accel": 30
  },
  "physics": {
    "underwater": true,
    "shape": "sphere",
    "radius": 3
  },
  "recon": {
    "observable": {
      "layer": "underwater"
    },
    "observer": {
      "items": [
        {
          "layer": "surface_and_air",
          "channel": "sight",
          "shape": "capsule",
          "radius": 150
        },
        {
          "layer": "underwater",
          "channel": "sight",
          "shape": "capsule",
          "radius": 150
        }
      ]
    }
  },
  "selection_icon": {
    "diameter": 24.0
  },
  "spawn_layers": "WL_Underwater",
  "tools": [
    {
      "spec_id": "/pa/units/sea/attack_sub/attack_sub_tool_weapon.json",
      "aim_bone": "bone_root",
      "muzzle_bone": "bone_root"
    }
  ],
  "unit_types": [
    "UNITTYPE_Custom58",
    "UNITTYPE_Naval",
    "UNITTYPE_Mobile",
    "UNITTYPE_Offense",
    "UNITTYPE_Basic",
    "UNITTYPE_Sub",
    "UNITTYPE_FactoryBuild"
  ]
}