equipment_modules = {
	# Standard heavy-battery-slot derivative unlocked by the General Project.
	# Combat and production statistics match the Solo super-heavy battery, but
	# the improvised mounting imposes a larger speed penalty on ordinary hulls.
	iron_nest_solo_heavy_battery = {
		category = ship_heavy_battery
		sfx = sfx_ui_sd_module_turret
		gfx = iron_nest_solo_heavy_battery
		add_equipment_type = capital_ship
		add_stats = { hg_attack = 25 build_cost_ic = 2400 }
		multiply_stats = { naval_speed = -0.10 }
		add_average_stats = { hg_armor_piercing = 50 }
		build_cost_resources = { steel = 1 chromium = 1 }
		critical_parts = { damaged_heavy_guns }
	}

	iron_nest_solo_super_heavy_battery = {
		category = ship_super_heavy_battery
		sfx = sfx_ui_sd_module_turret
		gfx = iron_nest_solo_super_heavy_battery
		add_equipment_type = capital_ship
		add_stats = { hg_attack = 25 build_cost_ic = 2400 }
		multiply_stats = { naval_speed = -0.08 }
		add_average_stats = { hg_armor_piercing = 50 }
		build_cost_resources = { steel = 1 chromium = 1 }
		critical_parts = { damaged_heavy_guns }
	}

	# Legacy ID retained as the twin-barrel naval battery.
	iron_nest_super_heavy_battery = {
		category = ship_super_heavy_battery
		sfx = sfx_ui_sd_module_turret
		gfx = iron_nest_super_heavy_battery
		add_equipment_type = capital_ship
		add_stats = { hg_attack = 32 build_cost_ic = 2650 }
		multiply_stats = { naval_speed = -0.10 }
		add_average_stats = { hg_armor_piercing = 51 }
		build_cost_resources = { steel = 2 chromium = 1 }
		critical_parts = { damaged_heavy_guns }
	}

	iron_nest_trio_super_heavy_battery = {
		category = ship_super_heavy_battery
		sfx = sfx_ui_sd_module_turret
		gfx = iron_nest_trio_super_heavy_battery
		add_equipment_type = capital_ship
		add_stats = { hg_attack = 38.5 build_cost_ic = 2900 reliability = -0.02 }
		multiply_stats = { naval_speed = -0.12 }
		add_average_stats = { hg_armor_piercing = 52 }
		build_cost_resources = { steel = 2 chromium = 2 }
		critical_parts = { damaged_heavy_guns }
	}
}
