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Orion-class dreadnought
Production information


Ship-to-ship combat

Technical specifications


2.8 kilometres (9,310 feet)


1.6 kilometres (5,380 feet)

Slipspace drive:

Shaw-Fujikawa Translight Engine




Chronological and affiliation


Human-Covenant War


United Nations Space Command


"There's not a ship with more fire-power."
— Fleet Admiral Edward Russell.

The Orion-class dreadnought is a new breed of ships in service with the UNSC Navy. Introduced during the Human-Covenant War, the Orion-class saw alot of action in the closing years of the war, notably during Operation: WAR HAMMER and in the Gliese 581 system.


The concept for a new breed of ships, the dreadnoughts, was debated for a long time. Upon the arrival of the Covenant, the UNSC leaders began to realize that their current ships were no match against there enemy's and if they were to stand any chance of surviving, they would have to build a new class of ships. After 30 years of debating, the first Orion-class dreadnought, the UNSC Orion, began service in 2539.


During the Insurrection the original design of the Orion-class was drawn up and was about two times the size of completed design, its size and firepower made its role to make the insurrectionists fear the UNSC and dominate space conflicts. Upon the arrival of the Covenant and new design was drawn up, in these blueprints its size was reduced for better maneuverability during battles. Soon the blueprints for the ship were passed and the construction of the first of five ships began in a city called Keyn on the planet Vus.


With the Orion-class dreadnoughts proving to more than efficient this lead to the creation of a new class of ships that served in the UNSC Navy after the Human-Covenant War, the Colossus-class dreadnought. This new breed of ships had thicker armour, more fire-power and a much larger size, this were made in line with the UNSC Infinity and several other ships to help humanity become a bigger, stronger and solid force in the galaxy.

Ships of the lineEdit