Production information
Manufacturer Bergan Industries
Production Year 3061[1][2]
Model ACS[citation needed]
Class Heavy
Cost 14,777,950 C-bills
Technical specifications
Mech type Clan BattleMech
Mass 65 tons
Chassis Bergan Version 6.3 Endo Steel
Armor Compound 12A1 Standard w/ CASE
Engine 325 XL
Communications System Garret L15
Targeting Tracking System RCA Instatrac Version 8
Heat Sinks 15 Double Heat Sinks
Speed 86 km/h
Jump Jets Clan Standard Type A3
BV (1.0) 2,393[1]
BV (2.0) 2,484


Following the move of Clan Ghost Bear to the Inner Sphere, Khan Bjorn Jorgensson ordered the creation of a new BattleMech. The Arcas was designed as a symbol to mark the beginning of a new era, so Loremaster Laurie Tseng named it after a character in the mythology of the Greeks who eventually became the constellation known as Ursa Minor. First produced in 3061, the Arcas is expensive for a second-line 'Mech. It utilizes an XL Engine that enables it to move up to 86 km/h and jump jets for a maximum jump capacity of one hundred fifty meters at a time. The Arcas mounts thirteen and a half tons of standard armor, the most a 'Mech of its size can carry.[1]

Weapons and Equipment[edit]

For long range combat, the Arcas carries a Series 7K ER Large Laser in each arm. When the Arcas' opponent closes, it can bring three Smartshot Mk. V Streak SRM-4s and a pair of Kolibri Delta Series Medium Pulse Lasers to bear. These accurate weapons help the second-line warrior once an enemy gets close. Fifteen double heat sinks help keep the 'Mech cool.[1]


  • Arcas 2 
    This variant is used primarily when far from supply lines. It removes the missiles and ER Large Lasers for a pair of ER PPCs and additional double heat sinks.[1] BV (1.0) = 2,681[3], BV (2.0)= 2,835[4]

Design Quirks[edit]

The Arcas has the following Design Quirk:[6]


In German products the unit's proper name was perfectly translated to Arkas, which is the common German transliteration from Greek Ἀρκάς.



  1. 1.0 1.1 1.2 1.3 1.4 Technical Readout: 3067, p. 122-123
  2. MUL online date for Arcas
  3. Combat Operations, p. 113
  4. Record Sheets: 3067 Unabridged, p. 214
  5. Record Sheets: 3067 Unabridged, p. 215
  6. BattleMech Manual, p. 90 Battlemech Quirk Table - Arcas Entry.