Heavy Assault Ships, often simply called Siege Capital Ships, sacrifice mobility and survivability for very powerful offensive capabilities. The Heavy Assault Ship is also the only capital ship that specializes in planetary bombardment. The Advent Revelation Battlecruiser is a little odd, and aside from its high bombard damage its more similar to a Support Capital Ship. Otherwise the Marza Dreadnought and Vulkoras Desolator are highly comparable to Battleships.