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Class overview

Elysium-class heavy cruiser


Reyes-McLees Corporation


United Nations Space Command, Colonial Military Administration

Preceded by

Hades-class heavy cruiser

Succeeded by

Marathon-class heavy cruiser



General characteristics

Heavy cruiser

Slipspace Drive

Shaw-Fujikawa Translight Engine


191-200 cm Titanium-A battle plate


36 GA-TL1 Longswords

Additional information

Insurrection, Human-Covenant War


Fleet command and control


"The Elysiums were the overshadowed older twin of the Marathons. They had more bells and whistles but they were too expensive to mass-produce. So when the Marathon-class came along they took the Navy by storm. Still, their status as excellent flagships ensured their fame during the war. A lot of famous war heroes led the fight from the bridge of an Elysium."
―Captain Leon Brando, on the history of the class

The Elysium-class heavy cruiser, also frequently known as the Elysium-class command cruiser, was a class of heavy cruiser that was overshadowed by its close cousin the Marathon-class. Introduced in 2511 it was marketed as a superior replacement for the ineffective Halcyon-class, it was the first of the “modern” generation of warships with top-of-the-line weapons and armor.

It was popular among flag officers and frequently used as flagships. Its only drawback was its expensive price tag. While a superb ship it was complex to build and too expensive to be used en masse and was more suited as a command ship thanks to its advanced command-and-control features, sometimes giving it the designation of a command cruiser. Addressing these issues, the Marathon-class was built as an improvement of the Elysium and was easier to produce with less complex electronics and a heavier arsenal of two Magnetic Accelerated Cannons.

Once it entered production they immediately supplanted the Elysium-class in its role of defending the Inner Colonies. Instead of being scrapped most of the Elysiums were transferred from their duties in the Inner Colonies to the Outer Colonies and were left to fade. Most of them were eventually donated to the Colonial Military Administration and were prized by the CMA who used them as flagships. When the Human-Covenant War erupted they were its most modern and effective capital ships, until the CMA was absorbed into the UNSC. During the war, they were a rare sight and never more than two participated in a single battle. The class’ lead ship, the UNSC Elysium, served as Admiral Sebastian T. Shelby’s flagship for several years until the Battle of Midvale in 2526. The UNSC Mobile Bay served as Admiral Elliot’s flagship before the Battle of Hollow Point in 2535.

Most of them were destroyed during the Fall of the Outer Colonies but several survived till late in the war and were recalled to defend the Inner Colonies. They fought at battles of Ballast, Miridem, New Cartage, Alluvion, and Skopje.

The last operational Elysium-class cruiser, the UNSC Lepanto, was destroyed during the Fall of Reach.

Known Ships of the Line

 Name   Hull Classification Symbol   Commissioned   Notes 
UNSC Elysium EC-1 March 14, 2511 Flagship of Admiral Sebastian T. Shelby. Destroyed during the Battle of Midvale.
UNSC Actium EC-2 April 3, 2511
UNSC Jutland EC-4 May 7, 2511
UNSC Mobile Bay EC-5 June 17, 2511 Flagship of Admiral George Elliot. Destroyed during the Battle of Hollow Point.
UNSC Salamis EC-12 February 16, 2512
UNSC Taranto EC-13 March 21, 2512
UNSC Armada EC-20 July 30, 2514
UNSC Philippine Sea EC-31 August 21, 2513
UNSC Tsushima Straits EC-45 August 25, 2513
UNSC Leyte Gulf EC-51 September 11, 2513
UNSC Lepanto (EC-65) December 12, 2513 Destroyed during the Fall of Reach.


  • The Elysium-class are named after decisive naval battles, namely one-sided ones.
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