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"
    ]
}