One of the most important aspects for many nations in Hearts of Iron 4 is navy warfare. Mastering the use of your navy can be crucial to achieving victory.
First and foremost, it is important to understand the different types of ships available in the game. The main classes of ships are battleships, cruisers, destroyers, submarines, and aircraft carriers.
Battleships are the most powerful ships in the game, capable of dealing heavy damage to enemy ships and providing a strong defense for your fleet.
Cruisers are also powerful ships but are not as heavily armored as battleships. Heavy cruisers are probably the best ship to produce.
Destroyers are lighter ships that are used for escort duties and anti-submarine warfare.
Submarines are stealthy ships that can be used to attack enemy convoys and ships. However, they are vulnerable to depth charges.
Aircraft Carriers are used to launch aircraft to attack enemy ships and provide air cover for your fleet.
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When building your navy, it is important to strike a balance between the different types of ships. If the fleet heavily focuses on battleships, it will be powerful but may become vulnerable to submarines and aircraft.
Conversely, a fleet that is heavily focused on aircraft carriers will be able to launch powerful air attacks. However, this fleet may be vulnerable to enemy surface ships.
Most navies work well with the Fleet in Being doctrine. Some countries like the UK, US, and Japan start the game with an incredibly powerful navy. In essence, Battleships and Air Carriers fill their navy.
In these cases, building capital ships is a waste of production as they are incredibly expensive. Moreover, You can allocate your resources toward other, more useful ships.
Hearts of Iron 4 Navy Technology
In addition to building ships, it is also important to research new technologies to improve the capabilities of your ships. This includes researching new guns, engines, and armor.
Researching new technologies will allow your ships to become more powerful, faster, and more resilient. When selected, you can refit your ships with new technology.
Heavy Cruisers in HOI4
Heavy cruisers are the best ship in the game. Despite the nerf of not being able to fit a light battery on a heavy cruiser, they are still the meta.
A simple navy with a few capital ships and a lot of destroyers and heavy cruisers will win most of the time (along with air support).
Hearts of Iron 4 Navy Layout
Once you have your navy, it’s time to battle!
There are different positions in the battle that different ships take up. First, there’s the screening group which consists of screen ships. Essentially, the screening group screens the battle-line and carrier group from torpedoes.
The battle-line consists of capital ships except for carriers. In addition to providing heavy firepower, these ships screen the carrier group from torpedoes.
The carrier group consists of carriers that can strike at long range. If any convoys are present, they will also appear in this area.
The submarine wolfpack consists of submarines. If the enemy battle-line and carrier group are insufficiently screened from torpedoes, the wolfpack may threaten them.
Screening efficiency is very important in the battle. The screening ratio is the proportion of screen ships to capital ships.
With proper positioning, a ratio of three screens per capital ship or carrier achieves 100% screening efficiency.
For instance, to achieve 100% screening effectiveness with 4 carriers and 4 battleships, one needs to have 24 screen ships.
High screening effectiveness shields the battle-line and carrier group from enemy torpedo assaults. In addition, screening grants all ships in those groups an improved hit probability and retreat speed.
Make sure that you keep in mind that a good navy always has heavy cruisers. Mastering the Hearts of Iron 4 navy is crucial to achieving victory.