The Kraken Experimental Giant Submarine is a Cybran major experimental naval unit, having the appearance of a large squid. It is equipped with 8 tentacles which fire laser beams that are effective at targeting naval, land, or air units. It is also equipped with 3 torpedo tubes which it uses to engage other submerged units. Because it is submersible, it can easily escape from an unbalanced enemy force.
Kraken is considered to be the most ineffective unit in the whole game, and is never used in online matches. It is only advised to be used in singleplayer as it is so ineffective relative to the cost and research, building them in a dedicated manner will result in loss even if the player building has the upper hand in naval war.
Kraken laser has the longest wind-up/down animation of any weapon. For example if a bunch of bombers attack it, they will be gone before it lifts its tentacles and starts shooting. It is equally ineffective against gunships, since while its dps is good against a singular air target, it takes too long to swap targets and no one uses a single unit for assault in Supreme Commander 2. Especially if the time has come to build experimentals.
Use the fact that the ACU builds twice as fast to your advantage, allowing you to make these units in 1:35 rather than 3:10, quicker than any assisted gantry. Do be careful about the frankly obscene amount of resources this will consume however.
You can submerge the Kraken, which makes it vulnerable only to torpedo weaponry. In exchange, it cannot use its tentacle weaponry.
It is ineffective against the IIluminate when submerged due to torpedos having no effects on hovering tanks and units. Conversely the only unit the Illuminate has to target submerged units is the Wilfindja, (and Yenzoo tank with DLC and research) if the Illuminate player possesses one, It is a waste of resources to construct a Kraken as the Wilfindja will be an even fight for it for approximately half the resources and less than half the build time.
The Kraken is one of the 3 units that can submerge in the game - the other two being the UEF Tigershark and Atlantis II.
Though armed with torpedos do not leave the Kraken unguarded because it is EASILY overwhelmed by a few submarines. (If the Kraken is up against 10 to 12 Tigersharks it will lose very quickly and most likely won't even kill one of the submarines)
The Kraken is somewhat useless in groups if attacking targets on land as usually only one will be able to attack and short range artillery or land units can easily deal with it. The Kraken is better off being used as a base defense for incoming naval or air units that try to go around your base.
If it's struggling to destroy a ship, just let it come up and use the laser tentacle.
There's a glitch that if you are attacking another unit and submerge then the beam attack will still be going even while moving and swimming. This can be fixed by having it submerge and attack another unit and kill it.