This article is about the BattleMech. For the Union-class DropShip, see Cossack (Individual Union-class DropShip).
Production information
Manufacturer Ceres Metals Industries[1]
Production Year 3060[2]
Model C-SK1
Class Light
Cost 2,362,440 C-bills
Technical specifications
Mech type Inner Sphere BattleMech
Mass 20 tons
Chassis Taijian Series X Endo Steel
Armor ArcShield VII Mk 6
Engine Hermes 120 XL
Communications System Endicott Type 22 Master
Targeting Tracking System Wentland Cyber-Track
Heat Sinks 10
Speed 97.2 km/h
Jump Jets Pitban LFT-65
BV (1.0) 374[3][4]
BV (2.0) 465[1][5]


The Cossack is named after the mercenary unit Khorsakov's Cossacks in honor of their faithful service to the St Ives Compact. The Cossack is a practice in compromise. Originally requested as the fastest 'Mech that Ceres Metals Industries could produce, the emphasis of the design changed throughout its development to a slow moving, heavily armored light 'Mech. The final design that was accepted became the current incarnation of the Cossack. The Cossack is built on a Taijian Series X Endo Steel chassis to save weight. More weight was cut from the design by using a lightweight Hermes 120 XL engine that gives the 'Mech a top speed of 97.2 km/h. Six Pitban LFT-65 jump jets allow the Cossack to jump up to hundred and eighty meters, allowing the 'Mech to easily handle most rough terrain. For protection, the Cossack has three tons of armor and has ten heat sinks to handle the heat produced by the weapons payload carried by the 'Mech. Overall, the compromise that created the Cossack has turned it into a light trooper 'Mech that works well as part of a team but alone excels at no one role.[1]

Weapons and Equipment[edit]

The primary weapons on the Cossack are a Kajuka Type 2 "Bright Blossom" Medium Laser and a MilDouglas "Duke" SRM-6. These are backed up by a pair of Jackson Model 12 Small Lasers. While this is not an impressive arsenal, the Cossack is capable of defending itself from most light 'Mechs and vehicles.[1]


  • C-1FC 
    The C-1FC variant first appeared during the Jihad, where it was given minor Advanced Technology upgrades to its arsenal. The 'Mechs armor was switched from standard Ferro-Fibrous Armor to Light Ferro-Fibrous, which allowed for an increase in protection of the 'Mechs vitals. All weapons were removed in favor of three Rocket Launcher 10s, spread across the Cossack's torso sections. The only energy weapon available, a Medium Variable Speed Pulse Laser, is mounted in the left arm. BV (2.0) = 483[6]


In German products the unit's proper name was perfectly translated to Kosak. The model code was accordingly changed to K-SK1.



  1. 1.0 1.1 1.2 1.3 Technical Readout: 3060, p. 72-73, "Cossack Profile"
  2. MUL online date for the Cossack
  3. Combat Operations, p. 123
  4. Record Sheets: 3060, p. 52
  5. Record Sheets: 3060 Unabridged, p. 103
  6. Record Sheets: 3060 Unabridged, p. 104 - Cossack variant listed in unabridged PDF record sheet book.