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

Naval research tree

没有炮手就位dlc

没有激活炮手就位炮手就位的科技树。

海军科技科技树解锁了新舰船和海军入侵的新科技。可以在研究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，分为了7种类型，还有三个海运科技。请注意，第一种海军运输技术运输船，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成吨伤害）。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	研究年份	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

轻巡洋舰-一种轻型屏卫舰。巡洋舰擅长于消灭其他屏卫舰，它的主要职责是保护主力舰不受到敌方中携带鱼雷的轻型舰船的攻击，但巡洋舰也能发射威力强大的鱼雷，如果她们离得足够近的话，能够伤害到大型船只。

重巡洋舰-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。

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Effects
	Light Cruiser I	1922	127.5		Maneuverable light cruisers that can maintain a high speed will continue to be useful for scouting missions.	Unlocks Light Cruiser I
	Light Cruiser II	1936	170	Light Cruiser I or Heavy Cruiser II	Post-war treaties put restrictions on cruisers, but well-armed light vessels can be developed while remaining within these limits.	Unlocks Light Cruiser II
	Light Cruiser III	1940	170	Light Cruiser II or Heavy Cruiser III	Now skirting the limits of treaties, larger and more heavily armored cruisers can be built, still with light enough weaponry to be classified as light cruisers.	Unlocks Light Cruiser III
	Light Cruiser IV	1944	170	Light Cruiser III or Heavy Cruiser IV	Tactically employed to protect larger ships, the modern generation of light cruisers can shake off most past restrictions and be better armed to handle aerial attacks.	Unlocks Light Cruiser IV
	Heavy Cruiser I	1922	127.5		The Washington Naval Treaty was set up to prevent an arms race in cruisers, among other ships, but this seems inevitable. By keeping armor light, the weapons load can be increased.	Unlocks Heavy Cruiser I
	Heavy Cruiser II	1936	170	Light Cruiser II or Heavy Cruiser I	Despite new efforts at treaties, refitting lighter cruisers with heavier weaponry remains efficient, although armor is still limited.	Unlocks Heavy Cruiser II
	Heavy Cruiser III	1940	170	Light Cruiser III or Heavy Cruiser II	As restrictions are increasingly ignored worldwide, more balanced heavy cruiser designs with more priority on armor can be built. Better anti-air guns allow these ships to cooperate in naval air warfare.	Unlocks Heavy Cruiser III
	Heavy Cruiser IV	1944	170	Light Cruiser IV or Heavy Cruiser III	Upscaled, longer and heavier designs with rapid-fire armaments are features in these final stages of heavy cruiser development.	Unlocks Heavy Cruiser IV

Battlecruisers

A large capital ship often with offensive abilities close to those of a battleship, but weaker armor traded for faster speed. Battlecruisers can take a lot of hits and carry a lot of firepower.

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Effects
	Battlecruiser I	1922	127.5		The post-war battlecruiser arms race resulted in several heavily armed designs, sacrificing armor for speed compared to battleships.	Unlocks Battlecruiser I
	Battlecruiser II	1940	170	Battlecruiser I or Battleship III	Rebuilt and repurposed battlecruisers continue to outrun even modern battleship designs by lighter protection, but have developed better systems for fire control, detection and aerial defenses.	Unlocks Battlecruiser II

Battleships

The largest capital ship with the biggest guns and strongest armor that money can buy. Such an expensive investment deserves proper support of smaller screening ships. Battleships can take a lot of hits and carry a lot of firepower.

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Effects
	Battleship I	1922	127.5		Considered by some to be a relic of a bygone era of naval warfare, by others as the most impressive ships ever built, no one can deny that these remnants of the battleship arms race constitute some of the most heavily armed and armored vessels ever built.	Unlocks Battleship I
	Battleship II	1936	170	Battleship I	With improved stability and range, a new generation of battleships improve upon previous designs while remaining within limits stipulated by naval treaties.	Unlocks Battleship II
	Battleship III	1940	170	Battlecruiser II or Battleship II	Thicker armor, stronger engines, a battery of high-caliber guns and improved anti-air capabilities can allow battleships to remain relevant, if correctly employed, in a world where naval warfare is increasingly dominated by aerial support.	Unlocks Battleship III
	Battleship IV	1944	170	Battleship III	As the world sees what may be the last major battleship confrontations, the importance of heavy armaments and anti-air turrets is greater than ever.	Unlocks Battleship IV
	Super-Heavy Battleship I	1936	170	Battleship II	The current state of the world no longer has any room for abiding by naval treaties. Without these limitations, we can focus entirely on creating the heaviest, most well-armed battleships of all time, able to engage multiple lesser vessels.	Unlocks Super-Heavy Battleship I
	Super-Heavy Battleship II	1944	170	Battleship IV or Super-Heavy Battleship I	An improvement on our earlier super heavy design with stronger weapons and improved fire control systems.	Unlocks Super-Heavy Battleship II

航空母舰

A capital ship able to carry wings of powerful carrier capable aircraft into battle. Also useful as a floating airfield you can position off the coast of your enemy.

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Effects
	Carrier I	1922	127.5		Many military theorists believe that naval aviation is the future. Converting old capital ships and ocean liners to carry aircraft will be the first step towards utilizing these new doctrines.	Unlocks Carrier I
	Carrier II	1936	170	Carrier I	As work begins on the first keel-up carrier designs, we must ensure that these ships have the range and speed to keep up with the rest of our navy, while respecting the post-war naval treaties.	Unlocks Carrier II
	Carrier III	1940	170	Carrier II	Improved construction methods and more specialized systems like deck edge elevators allow these carriers to transport more planes more efficiently.	Unlocks Carrier III
	Carrier IV	1944	170	Carrier III	With many naval treaties now increasingly ignored, we can proceed to build carriers capable of transporting more planes than ever to secure air superiority cover.	Unlocks Carrier IV

潜艇

The role of the submarine is to hunt down enemy shipping and not have to challenge a superior enemy fleet directly to hurt them. Submarines employ stealth and powerful torpedoes to destroy enemy convoys. Submarines can also fill a role in regular fleet combat should the enemy be low on submarine detection. A submarine starts out hidden and is either spotted if it gets too close to a destroyer or after firing a torpedo after which it will try to escape. It won't be an effective weapon against an enemy with a proper fleet, but unescorted capital ships won't have much defense.

The goal of the submarine is primarily to attack your enemy's economy by preying on convoy routes. For example:

• Attacking convoys along an enemy trade route will deny them foreign resources.
• A nation split across the globe like Britain must convoy home resources to their capital area from many places in its empire to use them, making them vulnerable to submarine raiding.
• When receiving lend lease, convoys carrying equipment can be sunk and will be lost forever.
• When deploying troops on foreign theaters of war a nation must ferry supply and reinforcement equipment to them. By taking out these convoys their troops will be weaker and easier to defeat.
• Troops being transported or during a planned invasion may be attacked leading to them being wiped out or severely weakened. You always want to be very careful and guard your transport routes before sending troops somewhere in war time.

Icon (generic)	Technology	Year	Base cost	Prerequisites	Description	Effects
	Submarine I	1922	127.5		Submarines are stealthy vessels designed to take out undefended convoys. The early models from the Great War pave the way for new methods of naval warfare.	Unlocks Submarine I
	Submarine II	1936	170	Submarine I	Better armed and more stable, new submarine designs are made to take advantage of advancements in naval tactics and have longer range, being able to attack distant convoy routes.	Unlocks Submarine II
	Submarine III	1940	170	Submarine II	The role of the submarine in the fleet outside of convoy attacks is still under debate. Achieving a balance between combination of speed, range and weaponry will be key to the necessary model.	Unlocks Submarine III
	Submarine IV	1944	170	Submarine III	Increased test depth and efficient layouts will be features of the modern submarines, taking advantage of field experience to select appropriate armaments and engines.	Unlocks Submarine IV

Transports

Icon	Technology	Year	Base cost	Prerequisites	Description	Effects
	Transport Ship	1922	127.5		Ship designed solely for troop movement, without any defensive capabilities.	Troop convoy requirements: -50% Naval Invasion Capacity: +10
	Landing Craft	1940	170	Transport Ship	Dedicated invasion craft make landing in hostile territory slightly less of a headache.	Invasion Preparation Time: -50% Invasion Defense: +15% Naval Invasion Capacity: +40
	Advanced Landing Craft	1944	170	Landing Craft	Advanced Landing craft means that our boys can get on the beach quicker and more effectively during an invasion.	Invasion Defense: +50% Naval Invasion Capacity: +100 Amphibious invasion speed: +25%

科研 

海军

海军 · 海军学说

空军

空军 · 空军学说

工业

工程学 · 工业

战争 

机制 

事件与决议

事件 • 决议