The Kolanis Siege Cruiser is a late-war conversion of the Kolanis Cruiser designed explicitly for long range heavy bombardment support, something that became a necessity during the Chouka War. Circasian tacticians knew that cracking the orbital defense bases of the Chouka would be a daunting task and something that the existing Circasian ship classes may not have been able to handle without higher than acceptable losses.

In previous years, Circasian research and development teams had been working off and on attempting to develop a successor to the particle lance but had little success in developing an acceptable prototype model. Some showed distinct promise but there were always problems associated with them that kept them from entering mainstream service. The war with the Chouka, however, accelerated research in this direction and eventually led the project to fruition.

The Kolanis Siege Cruiser replaces its cargo bays and many other tertiary ship systems with two enormous siege particle cannons. These weapon mounts are capable of dealing immense amounts of damage to the target. The cohesiveness of the beam fired from the cannon also proved to be highly effective in effecting long-range bombardment.

The first two Kolanis Siege Cruisers made their presence known at the Battle of Mishtuki. In that battle, it was the Kolanis Siege Cruisers that were responsible for destroying Mishtuki Station, a move that saved countless Circasian lives in the assault. Several Kolanis Siege Cruisers were built after the war was over, but most of them were either destroyed or scuttled due to long-term systems problems with the siege cannons.