Anti-Armour Gun

* Old World
* New World
* The Arctic
* Enbesa

*Fires armour-piercing rounds at high speed to penetrate metal-hulled ships. Less effective against wooden hulls.*

**Anti-Armour Gun** is a Harbour Building and a defence turret which uses armour-piercing rounds to attack enemy ships located within its range and line of sight. It deals significantly more damage to metal-hulled ships (steam ships) than to wooden-hulled ships (sailing ships). It can be built in every region, it requires free harbour area, does not need any road connection. After construction or relocation, one minute needs to pass to train fusiliers, only after this time the anti-armour gun can start attacking enemies.

## Properties and usage

Anti-armour gun is a defence turret which is especially effective against steam ships. It has high damage and medium hitpoints, but low attack range and low attack speed. It deals 355% of its default damage to metal-hulled ships and only 40% of default damage to wooden-hulled ships. It translates into the following damage numbers:

* Against wooden-hulled ships: 200 damage per shot, 21.51 damage per second
* Against metal-hulled ships: 1775 damage per shot, 190.86 damage per second

Additionally, anti-armour gun applies a special effect to ships under its attack. The applied effect is slightly different depending on whether a ship is wooden-hulled or metal-hulled. Upon getting shot by the anti-armour gun, the first stage of appropriate effect is applied. Each stage has its specific duration, and after one stage ends the next stage starts. When the last stage is finished the effect completely disappears. Applied effects are:

For wooden-hulled ships:
* **Hull Under Repair**: Movement Speed -5% • Attack Speed -10% • Stage 1/3 • Duration: 2 minutes and 15 seconds
* **Hull Leaking**: Movement Speed -10% • Attack Speed -15% • Stage 2/3 • Duration: 10 minutes
* **Hull Pierced!**: Movement Speed -20% • Attack Speed -25% • Stage 3/3 • Duration: 20 minutes

For metal-hulled ships:
* **Hull Under Repair**: Hitpoints -300 • Movement Speed -15% • Attack Speed -40% • Stage 1/3 • Duration: 2 minutes and 15 seconds
* **Hull Leaking**: Hitpoints -600 • Movement Speed -55% • Attack Speed -65% • Stage 2/3 • Duration: 10 minutes
* **Hull Pierced!**: Hitpoints -750 • Movement Speed -75% • Attack Speed -75% • Stage 3/3 • Duration: 20 minutes

Thanks to increased damage and the special effects, anti-armour guns can easily destroy most of the steam ships, however they are rather weak against sailing ships. Their biggest disadvantages are their low range and long reload time. Anti-armour guns can be easily outranged by battle cruisers and ships-of-the-line, and by frigates or the flagship equipped with items which increase attack range by 20%. However, with only 20% increase positioning frigates or flagships in a safe spot while still reaching an anti-armour gun can be difficult so at least 25% increased attack range is recommended. Given that battle cruisers become available at the same time as anti-armour guns, these defence turrets are rarely useful, unless the enemy fleet consists mostly of monitors and their variants.

## Items

Some items when equipped in harbourmaster's offices can have an impact on anti-armour guns.