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Marathon-class heavy cruiser

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Marathon-class Cruiser
Marathon-class heavy cruiser
Production information



Technical specifications

Engine unit(s)

Deuterium fusion reactor

Slipspace drive

Shaw-Fujikawa Translight Engine


  • 100,000 tons (200,000,000 lbs)[1]


1,192 metres (3,910 ft) [2]


293 metres (960 ft) [2]



Function information


Attack, defense



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The Marathon-class heavy cruiser is a cruiser classification used by the UNSC Navy.[2] The class was meant to be a replacement for the aging Halcyon-class light cruisers. Their numbers are limited and they are usually commanded by the highest-ranking officers.

Nearly all Marathon-class cruisers were destroyed during the Battle of Earth, and were subsequently replaced by the Autumn-class heavy cruiser.


Marathon Cruiser Outline

The silhouette of a Marathon-class heavy cruiser.

At 1192 meters long, Marathon-class heavy cruisers are approximately three times the length of a UNSC frigate. They are equipped with thick layers of Titanium-A armor, and are able to sustain far greater damage than any UNSC frigate or destroyer. Due to their size, durability and firepower (2 MACs as well as dozens of oversized Archer missile pods), these massive vessels are commanded by UNSC Admirals and primarily served as flagships for UNSC fleets.[3]


During the early years of the Human-Covenant war, Marathons played a crucial role in defending the outer colonies, although most ended up getting destroyed during that period of time. The remainder of these great cruisers were reassigned to the defense of the Inner colonies in the latter years of the Human-Covenant war.[4] They were considered extremely valuable in terms of firepower and armor, and it was seen to by the UNSC admiralty that they were only used in the most dire and occasional of circumstances. Marathons were present at the Battle of Sigma Octanus IV and the Fall of Reach. At least twelve, but likely many more, saw action at the Battle of Earth under Fleet Admiral Harper and another was part of Battle Group Stalingrad during the Battle of Onyx.

Following the introduction of the Autumn-class heavy cruiser, most of the surviving Halcyon-class light cruisers and Marathon-class heavy cruisers were decommissioned, with just a handful of them remaining in service.[5]

Ships of the LineEdit


  • In Halo: The Fall of Reach, the Marathon classification is erroneously identified as a carrier.[9]
  • The name Marathon is a reference to Bungie's Marathon game series.
  • In Halo: The Fall of Reach, it is mentioned that the Leviathan was one of twenty UNSC cruisers left in the Fleet, which were being slowly pulled back to protect the Inner colonies.[4] At least eight of them were present in the UNSC Home Fleet in October 2552.[10]




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