Leviathan (WarShip class)

Production information
Manufacturer (Clans)
Introduced 3042 (designed)
Use Dreadnought
Tech Base Clan Advanced
Cost unknown
Technical specifications
Mass 2,400,000
Length ca. 1,700 m
Sail Diameter unknown
Fuel unknown
Burn Rate unknown
Safe Thrust unknown
Top Thrust unknown
Sail Integrity unknown
KF Drive Integrity unknown
LF Battery unknown
Armament unknown
Armor Ferro-Carbide Armor
DropShip Capacity unknown
Crew unknown
Grav Decks
Escape Pods/Life Boats unknown
Heat Sinks unknown
Structural Integrity unknown
BV (1.0) unknown
BV (2.0) unknown


A Leviathan in dock as of 3057, presumably one of the first two to be constructed (Leviathan or Great Bear)

The original Leviathan-class Dreadnought was designed by Clan Ghost Bear, with the help of Clan Snow Raven. No ship was ever built to match the original specifications, but three distinct sub-classes of the Leviathan have emerged:

Clan Snow Raven started construction of two Leviathans (the Leviathan and the Great Bear) for the Ghost Bears in 3042. Halfway during construction the Ghost Bears decided to alter the design specs and have the hulks completed as armed transporters instead. Thus, they were built as the Leviathan (Heavy Transport) subclass and saw use in Clan Ghost Bear's migration to the Inner Sphere. After the Clan had completed the move, the ships were reconfigured into battleships, but modifying the heavy transports resulted in a battleship design that was different from the original Leviathan design—the Leviathan (Battleship) subclass, also sometimes referred to as Leviathan II. A third vessel (Rasalhague) was constructed immediately to these specifications by the Ghost Bears.

In 3070 Clan Steel Viper launched the Perigard Zalman. It was based on the original Leviathan designed but upgraded with the latest technologies, and the Steel Vipers called it the Leviathan Prime class.

Named Vessels[edit]

(See Category:Individual Leviathan-class WarShips)


  • The Leviathan was depicted on the cover of Technical Readout: 3057 which heavily focused on space ships. However, the Leviathan was not actually included in the book, leaving many fans to wonder about the apparently massive mystery vessel shown on the cover. The in-universe date of the book suggests the depicted ship must be either the Leviathan or the Great Bear, as construction of the third Leviathan-class vessel was not begun until around a decade later.
  • No game stats have ever been published for the original Leviathan. The known data from the transport and battleship subtypes does establish its mass (as a different mass would require a different drive core) and strongly suggests that it would have had eight docking hardpoints; beyond that, no hard data is available. Even the length of the transport version (1,623 m) and the battleship upgrade (1,700 m) is different, providing only a ballpark estimate.