Production information
Manufacturer General Motors[1]
Production Year 3054[2]
Model STH-1D[1]
Class Medium
Cost 10,456,240 C-bills
Technical specifications
'Mech type Inner Sphere BattleMech
Mass 45 tons
Chassis GM Stealth Endo Steel
Armor Durallex Medium
Engine GM 315 XL
Communications System Dalban Micronics
Targeting Tracking System Dalban HiRez with Active Probe
Heat Sinks 10 double
Speed 118 km/h (151 km/h with MASC)
Jump Jets 100AFVTA
BV (1.0) 1,067[3][4]
BV (2.0) 1,231[1][5]


The Stealth is a heavy scout 'Mech that is in use by the Federated Suns and the Lyran Alliance. The 'Mech has a GM 315 XL engine that allows the Stealth to move at speeds of 118.8 km/h and the MASC system can push the 'Mech to 151.2 km/h in short bursts. This amazing mobility is augmented by jump jets which the Stealth can use to jump up to two hundred and ten meters. The Stealth is also outfitted with a Cyclops-Beagle Sensory active probe that the Stealth can use to find hidden enemy units.

Weapons and Equipment[edit]

The Stealth is armed with an eclectic short range weapons arsenal. The primary weapons in this arsenal are a pair of Diplan M3 medium lasers which are backed up by a Shannon SH-60 SRM-6 and a Federated SuperStreak Streak SRM-2 which both allow the 'Mech to find weak spots in an enemy 'Mech's armor.


  • STH-2D 
    The 2D removes the weapons from the Stealth and retains the active probe. The Stealth has been rearmed with a Streak SRM-6 launcher and a trio of ER medium lasers, making the 'Mech devastatingly powerful at short to medium ranges.[1] BV (1.0) = 1,265; BV (2.0) = 1,508[6]
  • STH-2D1 
    A field modification of the 2D, the 2D1 variant removes an ER medium laser from the 2D model and replaces it with a C3 slave unit, allowing it to share targeting data with friendly units.[1] BV (1.0) = 1,186; BV (2.0) = 1,339[7]
  • STH-2D2 
    Another modification of the 2D model, the 2D2 removes an ER medium laser from the 2D model and replaces it with a TAG target designator, allowing it to spot for Arrow IV artillery bombardments. BV (1.0) = 1,186; BV (2.0) = 1,339[8]
  • STH-3S 
    The 3S variant of the Stealth is built using reverse engineered stealth armor. The 'Mech is armed with a single ER PPC which has a very long range. The ER PPC's long range and the stealth armor combine to make the 3S an almost perfect sniper 'Mech.[1] BV (1.0) = 1219; BV (2.0) = 1,577[9]

Custom Variants[edit]

  • STH-1D Stealth Anna 
    A customized 1D model variant created for Captain Anna Ramirez during the FedCom Civil War. Ramirez collected several medium pulse lasers and additional medium lasers and had techs fit them in place of her SRM 6 launcher. She also had a half ton of armor added to the thin-hulled design. BV (1.0) = 1,240[11]

Design Quirks[edit]

The Stealth has the following Design Quirks:[12]


  • In German products, the unit's proper name was translated to Schleicher. The model code was accordingly changed to SLC-1D.



  1. 1.0 1.1 1.2 1.3 1.4 1.5 Technical Readout: Jihad, pp. 94–95: "STH-1D Stealth"
  2. MUL online date for the Stealth
  3. Technical Readout: 3055 Upgrade, pp. 36–37: "STH-1D Stealth"
  4. Combat Operations, p. 124
  5. Record Sheets: 3055 Upgrades Unabridged, p. 48
  6. Record Sheets: 3055 Upgrades Unabridged, p. 49
  7. Record Sheets: 3055 Upgrades Unabridged, p. 50
  8. Record Sheets: 3055 Upgrades Unabridged, p. 51
  9. Record Sheets: 3055 Upgrades Unabridged, p. 52
  10. Experimental Technical Readout: Steiner, p. 4
  11. Record Sheets: Unique 'Mechs, p. 5: Stealth Anna - Custom Variant published by BattleCorps website
  12. BattleMech Manual, p. 95: BattleMech Quirk Table - Stealth Entry