#### New optional items in the added slots for cruisers, destroyers, and battleships

```
# Medium battery (non-capital)
ship_light_medium_battery
# Heavy battery
ship_heavy_battery
# Super heavy battery
ship_super_heavy_battery
# Anti-aircraft guns
ship_anti_air
# Fire control system
ship_fire_control_system
# Radar
ship_radar
# Aircraft carrier engine (max +60% +25%)
carrier_ship_engine
# Aircraft carrier nuclear engine
carrier_ship_nuclear_engine
# Heavy armor scheme
ship_heavy_armor
# Anti-submarine equipment
ship_depth_charge
# Torpedo launcher
ship_torpedo
# Aircraft facilities
ship_airplane_launcher
# Fuel tank
ship_extra_fuel_tank
```

Destroyers do not have heavy battery options. Combinations of destroyer + capital ship or submarine + capital ship are invalid.

#### Submarines

In addition to the regular ship options, the following have been added:

```
# Torpedo compartment
ship_torpedo_sub
# Deck gun
ship_light_battery_sub
# Snorkel
ship_sub_snorkel
# Coating
ship_sub_coating
# Missile launcher
ship_rocket
# Nuclear missile launcher
ship_nuclear_rocket
```

#### Optional modules in the added slots for aircraft carriers

In addition to the regular ship options, the following have been added:

```
# Hangar
ship_deck_space
# Hangar (ice carrier)
big_ship_deck_space
```

The original engine slot of the ice aircraft carrier has been added with a nuclear engine option.