Double Cannon

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"Double cannons, double shots per cannon, It's a double-double dose of trouble!"
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Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8
Level 9
Level 10
==Summary==
*The Double Cannon is a defensive building in the Builder Base that fires rapid bursts of cannonballs at ground troops, with four shots per volley. It is unlocked at Builder Hall level 2.
*The Master Builder can gear up a in the Home Village which will allow the Cannon to shoot similarly to the Double Cannon. This requires the Cannon to be at least level 7 in the Home Village, which is unlocked at Town Hall 6, and a level 4 Double Cannon in the Builder Base, which is unlocked at Builder Hall 4.
*While Double Cannons do high damage per second, they have a shorter range and cannot attack air troops.
==Strategies==
===Defensive Strategy===
*Double Cannons are specialised to doing high ground DPS, enabling it to be an effective defense against ground tanks such as the Boxer Giant or the Battle Machine. It is also capable of picking off low-health troops in a few volleys, such as Bombers, Cannon Carts, Night Witches and Electrofire Wizards.
*Although it has high damage output, the Double Cannon has a weakness against large swarms, as their burst only targets one unit. You will find it useful to protect Double Cannons with splash-damaging defenses like the Multi Mortar or the Roaster. Its inability to attack air also means that you should also protect Double Cannons with air-targeting defenses like s.
*Their short range prevents them from protecting buildings in front of them from Sneaky Archers if a separates the Double Cannon and the building. It may still be useful to leave a building in front of them to prevent Sneaky Archers from easily destroying them under their cloak.
*A larger issue arising from its short range comes in its interaction against the Cannon Cart, as the latter can outrange the Double Cannon by going into Mortar mode. To prevent Cannon Cart value, defenders should avoid grouping short-range defenses together.
**An alternative to defending against Cannon Carts is to bait attackers into using them by deliberately grouping short-range defenses together, but also rig likely deployment locations with Push Traps to push them in range. However, skilled attackers will often use small units like a single to test for these traps beforehand, enabling their Cannon Carts to exploit the weakness.
===Offensive Strategy===
*Air troops such as the have little to worry from a Double Cannon since the Double Cannon cannot attack them. However, the Double Cannon can still distract them and prevent them from attacking more important buildings.
*The Double Cannon is weak against large swarms. This makes them easy to overwhelm with Raged Barbarians or Skeletons from the Drop Ship.
*Its short range allows the Cannon Cart to outrange it while the Cart is in Mortar mode. However, if the Cannon Cart is not properly watched by the attacker, it may wander into range while in Cannon mode and be promptly destroyed.
==Upgrade Differences==
The Double Cannon undergoes significant visual changes at levels 4, 5, 8, 9, and 10.
*When initially constructed, two cannons are tied together with rope at the neck, with riveted wooden plating on the side of the barrel, on top of rotational rotational mount in the ground. The mount is surrounded by wooden planks acting as a foundation, with a piece of plank bolted down at the front corner and some vegetation around.
**At level 2, the cannons are bigger, the rope holding them together is now strapped between them, there are now two wooden plates side by side and they become vertical. The inner planks has studs in the middle, the outer planks are flush at the corner and studded there, and the bolted piece is removed.
**At level 3, the cannons are even bigger and instead of two separate cannon barrels tied together, the two barrels are joined together as one piece, the ropes in between are removed, and the two wooden plates are merged into one and become copper. The inner and outer planks surrounding the mount merges and is raised up from the ground and most of the vegetation on it disappear.
**At level 4, the ropes are replaced with a copper band around the neck, and the copper plates on the sides are removed. The planks connect diagonally, the corners of the foundation receive metal plates with brass rivets, and all of the vegetation is removed.
**At level 5, the cannons become substantially larger and another copper band appears near the back of the barrels. The side of the base is reinforced by copper plates and the corner plates are part of the foundation and thicker.
**At level 6, the front copper band turns golden and the muzzle rings become copper. The corner metal foundations are changed to square wooden foundations with golden square embeds on them.
**At level 7, the rear copper band also turns golden. The copper plates on the sides are replaced with golden plates and the corner wooden foundation turns into a brownish stone.
**At level 8, the side of the barrel gains a golden fitting with a golden ring, the back band extends into a trapezoid in the middle, and the back of the barrels turn gold. The corners foundations turns into gold from brownish stone and the gold squares are replaced with copper fitting holding a gold ring.
**At level 9, all the fittings and gold rings are removed. The back band moves further back and is wider, and some thick gold plates are welded on top, the trapezoidal bump also becomes a plate. The gold plates on the sides are replaced with black metal plates which indents through the middle and the corner foundation is L-shaped, raises even higher, and slanted on the top.
**At level 10, both cannons are almost covered in gold and the muzzle ring is now silvery, the side plates are replaced with a folded triangle.
==Statistics==
Level	Damage per Second*	Damage per Shot	Hitpoints	Build Cost	Build Time	Experience Gained	Builder Hall Level Required
1 	84 	50 	600 	20,000 	10m 	24 	2
2 	92 	55 	690 	50,000 	1h 	60 	3
3 	103 	61 	800 	80,000 	3h 	103 	3
4 	113 	67 	910 	300,000 	12h 	207 	4
5 	125 	74 	1,050 	900,000 	1d 	293 	5
6 	136 	81 	1,250 	1,400,000 	2d 	415 	6
7 	150 	89 	1,450 	2,200,000 	4d 	587 	7
8 	165 	98 	1,700 	3,200,000 	6d 	720 	8
9 	182 	108 	1,950 	4,200,000 	8d 	831 	9
10 	202 	120 	2,200 	5,200,000 	10d 	929 	10
Range 	Time Between Bursts	Shots Per Burst	Damage Type 	Targets
7 tiles	1.6s 	4 shots 	Single Target	Ground
*These damage per second values are seen in-game and are approximations; it does not necessarily do this much DPS if it cannot utilise the full potential of its bursts.
== History ==
Patch 	Type 	Description
May 22, 2017 	Update	Added the Double Cannon with 5 levels.
June 27, 2017 	Update	Added the level 6 Double Cannon.
September 27, 2017	Update	Added the level 7 Double Cannon.
March 5, 2018 	Update	Added the level 8 Double Cannon.
June 18, 2019 	Update	Added the level 9 Double Cannon.
May 15, 2023 	Update	Added the level 10 Double Cannon.
==Trivia==
*Although the Double Cannon shoots burst fire of 4 shots, the Double Cannon will not separate the shots on different troops. For example, if it targets a Sneaky Archer with low health, the 1st shot will kill it and the remaining 3 will be wasted.
*Although the description implies that the two cannon barrels fire two shots each per volley, all four shots appear to come out of the middle of both these cannon barrels. This trait is shared with the Multi Mortar, whose shells are all fired from a single barrel as opposed to all of their barrels.
Category:Buildings
Category:Defenses
Category:Builder Base
de:Doppelkanone
Category:Builder Base Defenses