A powerful form of Laser Weaponry, it is generally only used large space ships or stations.
The Laser Cannon is really just a large Laser Weapon, however due to be used primarily in space it is not affected by the one flaw of laser weapons which is their loss of accuracy in atmosphere. This makes it highly dangerous, as the average one can vaporized and entire fighter in one hit and blow a whole straight through smaller ships with their lighter armor. Only heavy armor and better can withstand one shot, typical heavy armor plating cannot withstand a few hits from one.
However, it should be noted that Laser Cannon have several drawback, they can overheat quickly, they can also have large energy demands.
Varies, they always appear as large barrels.