海军科技

钢铁雄心 IV

海战

海军

海军单位

海军任务

海军战斗

海军科技

海军学说

海军科技树

拥有炮手就位dlc

Man the Guns replaces the existing naval technology system of set, successive designs with an extensive modular system that allows players to create more highly customized individual ship classes. Each ship has a number of slots for modules depending on its hull type, located above and below its portrait in the ship design screen. The bottom-side slots are considered fundamental mountings for the class and are universal to them, though some such as AA or Torpedoes need not be filled. For instance, all Destroyers have bottom-side mountings for one Battery Gun, one AA mount, a Fire Control/Sonar, a Sonar/Radar, a Torpedo Launcher, and an Engine. All ships also are required to have certain mountings -- a Destroyer, for instance, must have a Battery and an Engine, as otherwise it has no means to move or defend itself.

However, the mountings above the portrait are additional slots for customizing the class, and contain no mandatory elements. These are divided into three sections for the ship -- Front, Middle, and Rear, with up to two Front and Rear slots and three Middles ones. As an example, the Early Destroyer Hull only has one Middle and one Rear slot above-portrait, but the 1940 Destroyer Hull has a Middle, Rear, and Front.

Exactly what can go in the optional slots also changes from ship class to ship class. Cruisers and Battleships can only mount main guns or AA in their Front slots, but Destroyers can mount Depth Charges in theirs (as the 1940 technology bracket also unlocks the Depth Charge Mortar). A wide variety of equipment exists that can produce highly specialized ships.

Destroyers

Destroyer hulls

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Early Destroyer Hull	1922	127 days			2 Service Manpower: 250 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 10.0 Depth Charges: 1.0 Max Speed: 36.3 kn Max Range: 1500 km HP: 25.0 Reliability: 64.0% Fuel Usage: 7.0 Production Cost: 490 Unlocks 35,000 Shp Engine Max Speed: 5.0 kn Max Speed: +21% Reliability: −20% Fuel Usage: 7.0 Production Cost: 90
	1936 Destroyer Hull	1936	127 days	Early Destroyer Hull		2 Service Manpower: 325 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 10.0 Depth Charges: 1.0 Max Speed: 39.6 kn Max Range: 1800 km HP: 40.0 Reliability: 68.0% Fuel Usage: 8.0 Production Cost: 620.00 Unlocks 40,000 Shp Engine Max Speed: 5.0 kn Max Speed: +32% Reliability: −20% Fuel Usage: 8.0 Production Cost: 120.00
	1940 Destroyer Hull	1940	127 days	1936 Destroyer Hull		3 Service Manpower: 400 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 10.0 Depth Charges: 1.0 Max Speed: 42.6 kn Max Range: 2000 km HP: 50.0 Reliability: 72.0% Fuel Usage: 10.0 Production Cost: 700.00 Unlocks 45,000 Shp Engine Max Speed: 5.0 kn Max Speed: +42% Reliability: −20% Fuel Usage: 10.0 Production Cost: 150.00
	1944 Destroyer Hull	1944	170 days	1940 Destroyer Hull		4 1 Service Manpower: 500 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 10.0 Depth Charges: 1.0 Max Speed: 42.6 kn Max Range: 2500 km HP: 60.0 Reliability: 73.6% Fuel Usage: 10.0 Production Cost: 750.00 Unlocks 50,000 Shp Engine Max Speed: 5.0 kn Max Speed: +47% Reliability: −20% Fuel Usage: 10.0 Production Cost: 170.00

Anti-submarine warfare

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Basic Depth Charges	1922	127 days	Early Destroyer Hull		Unlocks Depth Charge Rails Depth charges: 8.0 Max Speed: -2% Production Cost: 90.00
	Depth Charge Thrower	1936	127 days	Basic Depth Charges		Unlocks Depth Charge Thrower Depth charges: 12.0 Max Speed: -2% Production Cost: 120.00
	Depth Charge Mortar	1940	127 days	Depth Charge Thrower		Unlocks Anti-submarine Mortar Depth charges: 16.0 Max Speed: -2% Production Cost: 150.00
	Improved Depth Charge Mortar	1944	127 days	Depth Charge Mortar		Unlocks Advanced Anti-submarine Mortar Depth charges: 20.0 Max Speed: -2% Production Cost: 180.00

Detection

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Smoke Generators	1922	63 days	Early Destroyer Hull		Global stats Fleet speed while retreating: +20%
	Passive Sonar	1922	127 days	Early Destroyer Hull		Unlocks Hydrophones Sub detection: 4.0 Production Cost: 40.00
	Active Sonar	1936	127 days	Passive Sonar		Unlocks Active Sonar Sub detection: 7.0 Production Cost: 60.00
	Improved Airplane Catapult	1936	63 days	Early Cruiser Hull		Unlocks Improved Floatplane Catapult Surface Detection: 10.0 Sub Detection: 3.5 -Max Speed: -1% Production Cost: 170

Cruisers

Cruiser hulls

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Early Cruiser Hull	1922	127 days			1 Service Manpower: 600 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 15 Max Speed: 30.0 kn Max Range: 2500 km HP: 100 Reliability: 64.0% Fuel Usage: 32.0 Production Cost: 2200 Unlocks Floatplane Catapult Surface Detection: 7.0 Sub Detection: 2.5 Max Speed: −1% Production Cost: 150 Cruiser Armor I Max Speed: -5% Armor: 6.0 Production Cost: +10% 60,000 Shp Engine Max Speed: 5.0 kn Max Speed: +20% Reliability: −20% Fuel Usage: 12.0 Production Cost: 400
	1936 Cruiser Hull	1936	127 days	Early Cruiser Hull		2 Service Manpower: 800 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 15 Max Speed: 40.3 kn Max Range: 3000 km HP: 110 Reliability: 68.0% Fuel Usage: 36.0 Production Cost: 2380 Unlocks 70,000 Shp Engine Max Speed: 6.0 kn Max Speed: +30% Reliability: −20% Fuel Usage: 16.0 Production Cost: 480
	1940 Cruiser Hull	1940	127 days	1936 Cruiser Hull		2 Service Manpower: 1200 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 15 Max Speed: 42.9 kn Max Range: 4000 km HP: 120 Reliability: 72.0% Fuel Usage: 36.0 Production Cost: 2480 Unlocks 80,000 Shp Engine Max Speed: 7.0 kn Max Speed: +35% Reliability: −20% Fuel Usage: 20.0 Production Cost: 550
	1944 Cruiser Hull	1944	127 days	1940 Cruiser Hull		3 Service Manpower: 1400 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 15 Max Speed: 44.2 kn Max Range: 4500 km HP: 130 Reliability: 76.0% Fuel Usage: 36.0 Production Cost: 2580 Unlocks 90,000 Shp Engine Max Speed: 7.0 kn Max Speed: +40% Reliability: −20% Fuel Usage: 24.0 Production Cost: 670

Cruiser armor

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Basic Cruiser Armor Scheme	1936	106 days	1936 Cruiser Hull		Unlocks 1 Cruiser Armor II Max Speed: -7% HP: +5% Armor: 8.0 Production Cost: +15%
	Inclined Belt Cruiser Armor Scheme	1940	106 days	Basic Cruiser Armor Scheme		Unlocks 1 1 Cruiser Armor III Max Speed: -10% HP: +10% Armor: 10.0 Production Cost: +20%
	All-or-Nothing Cruiser Armor Scheme	1944	106 days	Inclined Belt Cruiser Armor Scheme		Unlocks 2 1 Cruiser Armor IV Max Speed: -12% HP: +15% Armor: 12.0 Production Cost: +25%

Battleships

Battleship hulls

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Early Heavy Ship Hull	1922	148 days			1 1 Service Manpower: 4000 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 30.0 Max Speed: 27.0 kn Max Range: 3000 km HP: 367.5 Armor: 26.0 Reliability: 64.0% Fuel Usage: 87.0 Production Cost: 6120 Unlocks 1 Battleship Armor I Surface Visibility: 10.0 Max Speed: -20% HP: +5% Armor: 26.0 Production Cost: +20% Battlecruiser Armor I Surface Visibility: 8.0 Max Speed: -10% HP: +5% Armor: 20.0 Production Cost: +7% 30,000 Shp Engine Max Speed: 7.0 kn Max Speed: +20% Reliability: −20% Fuel Usage: 20.0 Production Cost: 1800
	1936 Heavy Ship Hull	1936	127 days	Early Ship Hull Heavy		1 1 Service Manpower: 5200 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 30.0 Max Speed: 35.2 kn Max Range: 3500 km HP: 388.5 Armor: 26.0 Reliability: 68.0% Fuel Usage: 92.0 Production Cost: 6720 Unlocks 90,000 Shp Engine Max Speed: 10.0 kn Max Speed: +30% Reliability: −20% Fuel Usage: 25.0 Production Cost: 2200
	Super Heavy Battleship Hull	1936	127 days	1936 Heavy Ship Hull		1 1 Service Manpower: 9000 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 30.0 Max Speed: 33.6 kn Max Range: 4500 km HP: 770 Armor: 55 Reliability: 64.0% Fuel Usage: 100.0 Production Cost: 9625 Unlocks 2 1 Super-Heavy Battleship Armor III Surface Visibility: 10.0 Max Speed: -25% HP: +10% Armor: 55.0 Production Cost: +25%
	1940 Heavy Ship Hull	1940	127 days	1936 Heavy Ship Hull		1 1 Service Manpower: 6000 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 30.0 Max Speed: 37.4 kn Max Range: 4000 km HP: 420 Armor: 26 Reliability: 72.0% Fuel Usage: 92.0 Production Cost: 6840 Unlocks 150,000 Shp Engine Max Speed: 11.0 kn Max Speed: +40% Reliability: −20% Fuel Usage: 30.0 Production Cost: 2600
	1944 Heavy Ship Hull	1944	127 days	1940 Heavy Ship Hull		1 1 Service Manpower: 6000 Surface Detection: 20.0 Sub Detection: 1.0 Surface Visibility: 30.0 Max Speed: 39.6 kn Max Range: 4500 km HP: 472.5 Armor: 26.0 Reliability: 76.0% Fuel Usage: 92.0 Production Cost: 6960 Unlocks 210,000 Shp Engine Max Speed: 12.0 kn Max Speed: +45% Reliability: −20% Fuel Usage: 35.0 Production Cost: 3000

Battleship armor

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Inclined Belt Armor Scheme	1936	106 days	Early Heavy Ship Hull		Unlocks 1 Battleship Armor II Surface Visibility: 10.0 Max Speed: -20% HP: +10% Armor: 31.0 Production Cost: +20% 1 Battlecruiser Armor II Surface Visibility: 8.0 Max Speed: -10% HP: +10% Armor: 25.0 Production Cost: +7%
	All-or-Nothing Armor Scheme	1940	106 days	Inclined Belt Armor Scheme		Unlocks 2 1 Battleship Armor III Surface Visibility: 10.0 Max Speed: -20% HP: +15% Armor: 40.0 Production Cost: +20% 1 1 Battlecruiser Armor III Surface Visibility: 8.0 Max Speed: -10% HP: +15% Armor: 30.0 Production Cost: +7%

Carriers

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Deck Conversions	1922	148 days			4 1 Service Manpower: 5000 Surface Detection: 26.0 Sub Detection: 5.0 Surface Visibility: 30.0 Max Speed: 36.0 kn Max Range: 4000 km HP: 325.0 Reliability: 52.0% Fuel Usage: 107.0 Production Cost: 4500 3 1 Service Manpower: 1000 Surface Detection: 26.0 Sub Detection: 5.0 Surface Visibility: 30.0 Max Speed: 30.0 kn Max Range: 4000 km HP: 125.0 Reliability: 52.0% Fuel Usage: 99.0 Production Cost: 3100 Unlocks 1 Deck Armor Max Speed: -5% HP: 25 Armor: 5.0 Production Cost: +10% 50,000 Shp Engine Max Speed: 5.0 kn Max Speed: +20% Reliability: −20% Fuel Usage: 12.0 Production Cost: 400 1 Hangar Space Max Speed: -5% Desk Size: 20 Production Cost: 2000
	1936 Carrier Hull	1936	127 days	Deck Conversions		3 1 Service Manpower: 4500 Surface Detection: 26.0 Sub Detection: 5.0 Surface Visibility: 30.0 Max Speed: 40.3 kn Max Range: 3000 km HP: 250.0 Reliability: 56.0% Fuel Usage: 103.0 Production Cost: 2930 Unlocks 120,000 Shp Engine Max Speed: 5.0 kn Max Speed: +30% Reliability: −20% Fuel Usage: 16.0 Production Cost: 480
	1940 Carrier Hull	1940	127 days	1936 Carrier Hull		4 1 Service Manpower: 5000 Surface Detection: 26.0 Sub Detection: 5.0 Surface Visibility: 30.0 Max Speed: 43.4 kn Max Range: 4000 km HP: 325.0 Reliability: 60.0% Fuel Usage: 107.0 Production Cost: 3150 Unlocks 150,000 Shp Engine Max Speed: 5.0 kn Max Speed: +40% Reliability: −20% Fuel Usage: 20.0 Production Cost: 550
	1944 Carrier Hull	1944	127 days	1940 Carrier Hull		4 2 Service Manpower: 5500 Surface Detection: 26.0 Sub Detection: 5.0 Surface Visibility: 30.0 Max Speed: 43.4 kn Max Range: 5000 km HP: 350.0 Reliability: 64.0% Fuel Usage: 107.0 Production Cost: 3800 Unlocks 210,000 Shp Engine Max Speed: 5 kn Max Speed: +45% Reliability: −20% Fuel Usage: 24.0 Production Cost: 670

Submarines

Submarine hulls

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Early Submarine Hull	1922	127 days	Basic Torpedo		1 Service Manpower: 200 Surface Detection: 20.0 Surface Visibility: 1.0 Sub Visibility: 25.0 Max Speed: 19.9 kn Max Range: 2500 km HP: 10.0 Reliability: 48.0% Fuel Usage: 8.0 Production Cost: 310 Unlocks Torpedo Tubes I Torpedo Attack: 14.0 Production Cost: 80 1,000 Shp Engine Max Speed: 5.0 kn Max Speed: +5% Reliability: −20% Fuel Usage: 7.0 Production Cost: 90
	1936 Submarine Hull	1936	127 days	Early Submarine Hull		2 Service Manpower: 200 Surface Detection: 20.0 Surface Visibility: 1.0 Sub Visibility: 19.0 Max Speed: 20.9 kn Max Range: 4000 km HP: 20.0 Reliability: 56.0% Fuel Usage: 9.0 Production Cost: 370 Unlocks Torpedo Tubes II Torpedo Attack: 18.0 Production Cost: 100 2,000 Shp Engine Sub Visibility: −5% Max Speed: 5.0 kn Max Speed: +10% Reliability: −20% Fuel Usage: 8.0 Production Cost: 120
	1940 Submarine Hull	1940	170 days	1936 Submarine Hull		2 Service Manpower: 200 Surface Detection: 20.0 Surface Visibility: 1.0 Sub Visibility: 14.2 Max Speed: 22.0 kn Max Range: 5000 km HP: 30.0 Reliability: 60.0% Fuel Usage: 9.0 Production Cost: 440 Unlocks Torpedo Tubes III Torpedo Attack: 22.0 Production Cost: 1200 3,000 Shp Engine Sub Visibility: −10% Max Speed: 5.0 kn Max Speed: +15% Reliability: −20% Fuel Usage: 10.0 Production Cost: 150
	1944 Submarine Hull	1944	170 days	1940 Submarine Hull		3 1 Service Manpower: 200 Surface Detection: 20.0 Surface Visibility: 1.0 Sub Visibility: 11.4 Max Speed: 23.1 kn Max Range: 6000 km HP: 35.0 Reliability: 64.0% Fuel Usage: 9.0 Production Cost: 570 Unlocks Torpedo Tubes IV Torpedo Attack: 28.0 Production Cost: 140 4,000 Shp Engine Sub Visibility: −15% Max Speed: 5.0 kn Max Speed: 200% Reliability: −20% Fuel Usage: 10.0 Production Cost: 170

Submarine snorkels

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Basic Submarine Snorkel	1940	85 days	Either: 1936 Submarine Hull 1940 Submarine Hull		Unlocks Basic Snorkel Sub Visibility: -10% Production Cost: 50
	Improved Submarine Snorkel	1944	170 days	Basic Submarine Snorkel		Unlocks Improved Snorkel Sub Visibility: -20% Production Cost: 70

Ship-based torpedo tubes

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Basic Torpedo	1922	170 days			Unlocks Torpedo Launcher I Torpedo Attack: 18.0 Max Speed: -1% Production Cost: 90
	Improved Ship Torpedo Launcher	1936	127 days	Basic Torpedo		Unlocks Torpedo Launcher II Torpedo Attack: 27.0 Max Speed: -1% Production Cost: 120
	Advanced Ship Torpedo Launcher	1940	127 days	Improved Ship Torpedo Launcher		Unlocks Torpedo Launcher III Torpedo Attack: 36.0 Max Speed: -1% Production Cost: 150
	Modern Ship Torpedo Launcher	1944	127 days	Advanced Ship Torpedo Launcher		Unlocks Torpedo Launcher IV Torpedo Attack: 45.0 Max Speed: -1% Production Cost: 180

Torpedo warfare

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Magnetic Detonator	1936	212 days	Basic Torpedo		Upgrades Destroyers, Submarines, Light Cruisers, Heavy Cruisers Torpedo Attack: +20%
	Homing Torpedo	1942	212 days	Magnetic Detonator		Upgrades Destroyers, Submarines, Light Cruisers, Heavy Cruisers Torpedo Attack: +20%
	Electric Torpedo	1940	212 days	Magnetic Detonator		Global stats Torpedo Reveal Chance: -25%

Armaments

Batteries

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Naval Gunnery	1922	85 days			Unlocks Light Battery I Light Attack: 1.0 Light Piercing: 1.9 Max Speed: -1% Production Cost: 90 1 Heavy Cruiser Battery I Surface Visibility: 3.5 Heavy Attack: 8.0 Heavy Piercing: 22.0 Max Speed: -4% HP: +40% Production Cost: 750 Light Cruiser Battery I Light Attack: 4.0 Light Piercing: 5.5 Max Speed: -3% HP: 20.0 Production Cost: 225 1 Heavy Battery I Heavy Attack: 12.0 Heavy Piercing: 31.0 Max Speed: -5% Production Cost: 1250
	Basic Light Battery	1936	85 days	Naval Gunnery		Unlocks Light Battery II Light Attack: 1.5 Light Piercing: 2.0 Max Speed: -1% Production Cost: 120
	Basic Medium Battery	1936	85 days	Naval Gunnery		Unlocks 1 Heavy Cruiser Battery II Surface Visibility: 3.5 Heavy Attack: 9.0 Heavy Piercing: 25.0 Max Speed: -6% HP: +40% Production Cost: 800 Light Cruiser Battery II Light Attack: 5.0 Light Piercing: 7.0 Max Speed: -4% HP: 20.0 Production Cost: 275
	Basic Heavy Battery	1936	85 days	Naval Gunnery		Unlocks 1 Heavy Battery II Heavy Attack: 14.0 Heavy Piercing: 36.0 Max Speed: -8% Production Cost: 1350 1 1 Super-Heavy Battery V Heavy Attack: 18.0 Heavy Piercing: 50.0 Max Speed: -10% Production Cost: 1700
	Improved Light Battery	1940	85 days	Basic Light Battery		Unlocks Light Battery III Light Attack: 2.0 Light Piercing: 2.5 Max Speed: -1% Production Cost: 150
	Improved Medium Battery	1940	85 days	Basic Medium Battery		Unlocks 2 Heavy Cruiser Battery III Surface Visibility: 3.5 Heavy Attack: 10.0 Heavy Piercing: 29.0 Max Speed: -7% HP: +40% Production Cost: 825 1 Light Cruiser Battery III Light Attack: 6.0 Light Piercing: 8.0 Max Speed: -4% HP: 20.0 Production Cost: 300
	Improved Heavy Battery	1940	85 days	Basic Heavy Battery		Unlocks 1 Heavy Battery III Heavy Attack: 15.0 Heavy Piercing: 40.0 Max Speed: -9% Production Cost: 1450
	Advanced Light Battery	1944	85 days	Improved Light Battery		Unlocks Light Battery IV Light Attack: 3.0 Light Piercing: 2.5 Max Speed: -2% Production Cost: 175
	Advanced Medium Battery	1944	85 days	Improved Medium Battery		Unlocks 2 Heavy Cruiser Battery IV Surface Visibility: 3.5 Heavy Attack: 11.0 Heavy Piercing: 34.0 Max Speed: -8% HP: +40% Production Cost: 900 1 Light Cruiser Battery IV Light Attack: 7.5 Light Piercing: 9.0 Max Speed: -5% HP: 20.0 Production Cost: 350
	Advanced Heavy Battery	1944	85 days	Improved Heavy Battery		Unlocks 1 1 Heavy Battery IV Heavy Attack: 16.0 Heavy Piercing: 43.0 Max Speed: -10% Production Cost: 1550

Shells

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Small-Caliber Semi-Armor Piercing Shell	1936	127 days	Basic Light Battery		Upgrades Destroyers, Light Cruisers, Heavy Cruisers, Battleships, Battlecruisers, Carriers Light Attack: +5% Light Piercing: +5%
	Small-Caliber Armor Piercing Shell	1942	127 days	Small-Caliber Semi-Armor Piercing Shell		Upgrades Destroyers, Light Cruisers, Heavy Cruisers, Battleships, Battlecruisers, Carriers Light Attack: +5% Light Piercing: +5%
	Armor-Piercing Capped Medium Shell	1936	127 days	Basic Medium Battery		Upgrades Light Cruisers Light Attack: +5% Light Piercing: +5% Heavy Cruisers Heavy Attack: +5% Heavy Piercing: +5%
	Medium-Caliber Semi-Armor Piercing Shell	1942	127 days	Armor-Piercing Capped Medium Shell		Upgrades Light Cruisers Light Attack: +5% Light Piercing: +5% Heavy Cruisers Heavy Attack: +5% Heavy Piercing: +5%
	Armor-Piercing Capped Shell	1938	127 days	Basic Heavy Battery		Upgrades Battleships, Battlecruisers Heavy Attack: +5% Heavy Piercing: +5%
	Super-Heavy Armor Piercing Shell	1942	127 days	Armor-Piercing Capped Shell		Upgrades Battleships, Battlecruisers Heavy Attack: +5% Heavy Piercing: +5%

Secondary batteries

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Casemate Secondary Battery	1922	68 days			Unlocks Secondary Battery I Light Attack: 3.0 Light Piercing: 5.5 Max Speed: -2% Production Cost: 180
	Turreted Secondary Battery	1936	68 days	Casemate Secondary Battery		Unlocks Secondary Battery II Light Attack: 4.0 Light Piercing: 7.0 Max Speed: -2% Production Cost: 240
	Dual-Purpose Secondary Battery	1940	68 days	Turreted Secondary Battery		Unlocks Dual-Purpose Secondary Battery Light Attack: 4.5 Light Piercing: 8.0 Anti-Air: 2.5 Max Speed: -3% Production Cost: 290 1 Dual-Purpose Battery Light Attack: 3.0 Light Piercing: 2.0 Anti-Air: 3.0 Max Speed: -2% Production Cost: 300

Damage control

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Fire Fighting Drills		212 days			Global stats Chance to Receive Critical Hit: -10% Effects of sustained Critical Hits: -10%
	Separate Fire Mains		212 days	Fire Fighting Drills		Global stats Chance to Receive Critical Hit: -10% Effects of sustained Critical Hits: -10%
	Diesel-powered Emergency Pumps		212 days	Separate Fire Mains		Global stats Chance to Receive Critical Hit: -10% Effects of sustained Critical Hits: -10%

Fire control methods

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Bracket Shooting		212 days			Upgrades Battleships, Battlecruisers Light Attack: +5% Heavy Attack: +5%
	Ladder Shooting		212 days	Bracket Shooting		Upgrades Battleships, Battlecruisers Light Attack: +10% Heavy Attack: +10% Heavy Cruisers Light Attack: +5% Heavy Attack: +5%
	Shell Dyes		212 days	Ladder Shooting		Upgrades Battleships, Battlecruisers Light Attack: +15% Heavy Attack: +15% Heavy Cruisers, Light Cruisers Light Attack: +10% Heavy Attack: +10% Destroyers Light Attack: +5% Heavy Attack: +5%

Transports

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Transport Ship	1922	212 days			Global stats Troop convoy requirements: -50% Naval Invasion Capacity: +10
	Landing Craft	1940	212 days	Transport Ship		Global stats Invasion Preparation Time: -50% Invasion Defense: +15% Naval Invasion Capacity: +40
	Advanced Landing Craft	1944	212 days	Landing Craft		Global stats Invasion Defense: +50% Naval Invasion Capacity: +100 Amphibious Invasion Preparation Speed: +25%

Mine warfare

Mines

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Contact Mine	1922	170 days			Unlocks Minelaying Rails Max Speed: -2% Minelaying: 1.0 Production Cost: 90 Minesweeping Gear Max Speed: -2% Minesweeping: 1.0 Production Cost: 30
	Magnetic Mine	1936	170 days	Contact Mine		Global Stats Naval mines damage: +20%
	Degaussing	1938	85 days	Magnetic Mine		Global Stats Naval mines avoidance: +50%
	Acoustic Mine	1942	170 days	Magnetic Mine		Global Stats Naval mines damage: +20%
	Pressure Mine	1945	170 days	Acoustic Mine		Global Stats Naval mines damage: +20%

Aerial minelaying

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Aerial Minelaying	1942	170 days	Acoustic Mine		Upgrades Naval Bombers Minelaying: 0.05 Tactical Bombers Minelaying: 0.08 Strategic Bombers Minelaying: 0.13
	Aerial Minesweeping	1944	170 days	Pressure Mine		Upgrades Naval Bombers Minesweeping: 0.10 Tactical Bombers Minesweeping: 0.15

Submarine minelaying

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Statistics
	Minelaying Submarine	1922	170 days	Contact Mine		Unlocks Minelaying Tubes Minelaying: 1.0 Production Cost: 90
	Torpedo-tube Mine Deployment	1940	170 days	Minelaying Submarine		Upgrades Submarines Minelaying: +20%

没有炮手就位dlc

未拥有 炮手就位的海军科技树

海军科技科技树解锁了新的舰船和海军入侵的新科技。可以在科研界面中陆军学说和海军学说的选项卡之间找到。海军科技树上有31种不同的科技，28级不同的舰船，其分为了7种类型，另外还有3个海运科技。请注意，第一种海军运输科技运输船，是执行海军入侵所必需的。还要注意的是，舰船的肖像上有一颗蓝色的钻石，表示它是一艘主力舰。主力舰设计用于在水面战斗中击沉敌舰，除了航母是通过其搭载的近距离空中支援机（CAS）提供轰炸外，其余的主力舰可以进行对岸炮击。

驱逐舰

最小型的屏卫舰，屏卫效率十分重要，因为主力舰需要在屏卫舰的保护下免受敌方小型舰艇鱼雷侵害（鱼雷虽然命中率低，但是击中后能对大型舰艇造成严重伤害）。驱逐舰是廉价的屏卫舰，可以躲避大口径火力，增加防空能力，并让您侦察和对抗潜艇。

图标（整体）	科技名	科研年份	基础消耗 时间	先决条件	描述	效果
	驱逐舰 I	1922	127.5		为了确保运输船的安全，第一次世界大战的驱逐舰需要更改它们的定位并改变它们的设计。新的设计将拥有更多的鱼雷来增加与敌人交火的机会。	解锁 驱逐舰 I
	驱逐舰 II	1936	170	驱逐舰 I	更长的鱼雷射程和更快的装填时间，外加诸如高角炮塔的新设计将使我们的驱逐舰变成更高效的多面手。	解锁 驱逐舰 II
	驱逐舰 III	1940	170	驱逐舰 II	为了应对来自空中以及水下的威胁，新型驱逐舰必须装备有雷达和更加先进的防空与反潜武器。	解锁 驱逐舰 III
	驱逐舰 IV	1944	170	驱逐舰 III	现代驱逐舰必须拥有多种不同的索敌装备，新型的深弹投放系统以及与以前的驱逐舰相比更大的吨位。	解锁 驱逐舰 IV

巡洋舰

轻型巡洋舰是一种轻型屏卫舰。它擅长于消灭其他屏卫舰，其主要职责是保护主力舰不受到敌军舰队中携带鱼雷的轻型舰船的攻击，但轻型巡洋舰也能发射威力强大的鱼雷，如果它们离得足够近的话，能够伤害到大型舰船。

重型巡洋舰是一种非常灵活的装甲巡洋舰，对于那些无力建造大型主力舰的国家来说，这是一个不错的选择。重型巡洋舰可以承受大量的攻击并携带大量的火力。

图标（整体）	科技名	科研年份	基础消耗 时间	先决条件	描述	效果
	轻型巡洋舰 I	1922	127.5		快速灵活的轻型巡洋舰仍然是执行侦察任务的一个不错的选择。	解锁 轻型巡洋舰 I
	轻型巡洋舰 II	1936	170	轻型巡洋舰 I 或 重型巡洋舰 II	虽然战后的条约对轻型巡洋舰提出了诸多限制，但是人们还是在条约的限制内设计出了火力出众的轻型船只。	解锁 轻型巡洋舰 II
	轻型巡洋舰 III	1940	170	轻型巡洋舰 II 或 重型巡洋舰 III	现在条约的限制解除了，人们可以设计更大也更重的巡洋舰，不过较弱的火力使它们还只能被划分为轻型巡洋舰。	解锁 轻型巡洋舰 III
	轻型巡洋舰 IV	1944	170	轻型巡洋舰 III 或 重型巡洋舰 IV	由于战术中常常被用于保护其他大型船只，现代轻型巡洋舰可以摆脱过去的种种限制并专心应对来自空中的威胁。	解锁 轻型巡洋舰 IV
	重型巡洋舰 I	1922	127.5		华盛顿海军条约设立的目的就是为了避免巡洋舰以及其他舰种的竞赛，然而这看起来是不可避免的。通过削弱装甲，军舰上可以装备的武器大大增多。	解锁 重型巡洋舰 I
	重型巡洋舰 II	1936	170	轻型巡洋舰 II 或 重型巡洋舰 I	虽然人们在条约中做了很多努力，但是在轻型巡洋舰上装备更重的武器仍然是一种很有效的方法，尽管装甲依然十分贫弱。	解锁 重型巡洋舰 II
	重型巡洋舰 III	1940	170	轻型巡洋舰 III 或 重型巡洋舰 II	由于越来越多的国家开始无视条约的限制，人们现在可以建造装甲更重更平衡的重型巡洋舰了。更好的防空武器能使它们在对空战斗中发挥更大的作用。	解锁 重型巡洋舰 III
	重型巡洋舰 IV	1944	170	轻型巡洋舰 IV 或 重型巡洋舰 III	这些重型巡洋舰的最终型号往往更长、更大也更重，它们还装备有高射速的速射武器。	解锁 重型巡洋舰 IV

战列巡洋舰

一种攻击能力接近战列舰的大型主力舰，但用较弱的装甲换取更快的速度。战列巡洋舰可以承受大量的打击和携带大量的火力。

图标（整体）	科技名	科研年份	基础消耗 时间	先决条件	描述	效果
	战列巡洋舰 I	1922	127.5		一战之后战列巡洋舰的火力竞赛催生出了几种火力强大，牺牲了装甲来获得相对战列舰的航速优势的设计。	解锁 战列巡洋舰 I
	战列巡洋舰 II	1940	170	战列巡洋舰 I 或 战列舰 III	为了保持对现代战列舰的速度优势，改进并且重新定位后的战列巡洋舰装甲更加贫弱，但它们现在拥有了更好的火控、索敌以及对空防御系统。	解锁 战列巡洋舰 II

战列舰

是最大的一种主力舰，消耗巨资却拥有最大的火炮和最厚的装甲。如此昂贵的投资值得小型屏卫舰的适当保护。战列舰可以承受大量的攻击和携带大量的火力。

图标（整体）	科技名	研究年份	基础消耗 时间	先决条件	描述	效果
	战列舰 I	1922	127.5		虽然有些人认为战列舰是属于过去的海战的古董，但是另一些人认为它们是人类有史以来最令人印象深刻的舰船。没有人会否认这些战列舰竞赛的遗物是人们建造过的火力最强大、装甲最坚实的军舰。	解锁战列舰 I
	战列舰 II	1936	170	战列舰 I	在不打破海军条约限制的前提下，新一代的战列舰与之前的设计相比拥有更好的稳定性以及更远的航程。	解锁 战列舰 II
	战列舰 III	1940	170	战列巡洋舰 II 或 战列舰 II	只要使用得当，拥有更厚的装甲，更强劲的引擎，大口径的火炮以及更强的防空能力的战列舰在空军慢慢变成主角的海战中仍可找到自己的一席之地。	解锁 战列舰 III
	战列舰 IV	1944	170	战列舰 III	当全世界看到可能是最后一次大型战舰对抗时，重型武器和防空炮塔的重要性比以往任何时候都要大。	解锁 战列舰 IV
	超重战列舰 I	1936	170	战列舰 II	在当前的世界形势下遵守海军条约已经变得完全没有必要了。挣脱了种种限制之后，我们现在可以全心全意地建造能同时对付数艘较小敌舰的、有史以来最重并且装备最优良的战列舰。	解锁 超重战列舰 I
	超重战列舰 II	1944	170	战列舰 IV 或 超重战列舰 I	我们在之前的超重战列舰上装上了更强大的武器以及改装过的火控系统。	解锁 超重战列舰 II

航空母舰

一种能够携带强大作战能力的航母舰载机的主力舰。同时作为一个浮动机场也很有用，您可以在敌人的海岸之外搜索敌人。

图标（整体）	科技名	研究年份	基础消耗时间	先觉条件	描述	效果
	航空母舰 I	1922	127.5		很多军事理论家相信未来是属于海军航空兵的。老旧的主力舰以及邮船改装的航空母舰将是这些新理论的第一个试验场。	解锁 Carrier I
	航空母舰 II	1936	170	航空母舰 I	第一种专用航空母舰的设计工作开始了，我们必须确保这种航空母舰在不违反海军条约的前提下，有足够远的航程和足够快的速度来跟上舰队中其他的军舰。	解锁 Carrier II
	航空母舰 III	1940	170	航空母舰 II	改进的建造方式以及诸如甲板边升降机这类的更加专业的系统使这些航空母舰可以更高效的携带更多飞机。	解锁 Carrier III
	航空母舰 IV	1944	170	航空母舰 III	随着海军条约被越来越多的国家所无视，我们现在可以建造能携带前所未有的数量的飞机来确保制空权的航空母舰了。	解锁 Carrier IV

潜艇

潜艇的作用是追捕敌方舰船，而不必直接挑战敌方的强大舰队来伤害他们。潜艇使用隐形和强大的鱼雷摧毁敌人的运输船队。如果敌人对潜艇的探测能力较低，潜艇也可以在常规舰队战斗中发挥作用。潜艇在战斗开始会隐藏起来，并在它接近驱逐舰或发射鱼雷后，它将试图逃脱并隐藏。在对付一个屏卫效率良好的舰队时，它不会是一个有效的武器，但无人保护的主力舰不会有太多的防御。

潜艇的目标主要是通过袭击运输船来打压敌人的经济水平。例如：

• 攻击敌人贸易路线上的运输船队将使他们失去外国的资源。
• 像英国这样在全球各地拥有领地的国家，必须从帝国的许多地方将本国资源护送到首都地区加以利用，这便使它们容易受到潜艇袭击。
• 当接受租借装备时，运送装备的运输船队可能会被击沉，并将永远消失。
• 在海外战场部署陆军部队时，一个国家必须向其处运送补给和补充装备。通过击沉这些运输船队，他们的部队将变得更弱，更容易被打败。
• 正在运送或计划海军入侵的陆军部队可能受到潜艇攻击，导致部队被消灭或严重削弱。在战争时期派军队去某地之前，您总是要非常小心，保护好您的运输路线。

图标（整体）	科技名	研究年份	基础消耗 时间	先决条件	描述	效果
	潜艇 I	1922	127.5		潜艇是擅长于对付无武装的运输船的暗影猎手。这些一战时期的早期型号为新海战方式的出现铺平了道路。	解锁 潜艇 I
	潜艇 II	1936	170	潜艇 I	新的潜艇拥有更好的武装以及更佳的稳定性，它们在设计中就考虑到了海军战术的最新发展并拥有更大的航程来满足袭击更远的航运路线的需要。	解锁 潜艇 II
	潜艇 III	1940	170	潜艇 II	关于潜艇在舰队中除了袭击运输船之外还应担任什么角色目前还有很大争议。各国海军都需要一种速度、航程以及武器三方面较为均衡的潜艇。	解锁 潜艇 III
	潜艇 IV	1944	170	潜艇 III	现代潜艇有着更深的测试潜深和更为优化的布局。根据战场上得到的经验，人们还为它们安装了更加合理的武器以及引擎。	解锁 潜艇 IV

运输舰

图标	科技名	研究所需年份	基础消耗 时间	先决条件	描述	效果
	运输船	1922	127.5		单纯用于移动军队的船只，毫无防御能力。	部队运输船需求： -50% 登陆作战上限： +10
	登陆艇	1940	170	运输船	专用登陆艇将使登陆敌方地区能稍稍容易些。	登陆准备时间： -50% 登陆防护： +15% 登陆作战上限： +40
	先进登陆艇	1944	170	登陆艇	先进登陆艇将使我军士兵能在登陆作战中更高效迅速地接近海滩。	登陆防护： +50% 登陆作战上限： +100 两栖登陆速度： +25%

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