Production information
Manufacturer Independence Weaponry[1]
Production Year 3061[2]
Model TSN-1C[1]
Class Medium
Cost 10,779,000 C-bills[2]
Technical specifications
Tech Base Inner Sphere[1]
Mass 50[1] tons
Chassis Endo Steel[1]
Armor Durallex Ferro-Fibrous[1]
Engine Vlar 300 XL[1]
Communications System Garret T-22 w/C3i[1]
Targeting Tracking System Garret D2J (I) w/TAG[1]
Heat Sinks 11 Double Heat Sinks[1]
Speed 97.2[1] km/h
BV (1.0) 1,079 (C3: 123)[3]
BV (2.0) 1,162[1][2][4]


The Tessen began as a joint project between the Draconis Combine and ComStar to build a heavy scout 'Mech. The project fell through and was left unfinished until ComStar continued the project independently when they were looking for a new 'Mech to deploy the new improved C3 system when it was initially developed. The Tessen is built on a lightweight Endo Steel chassis and is powered by a lightweight Vlar 300 XL engine, giving the 'Mech a top speed of 97.2 km/h. The Tessen carries an improved C3 computer allowing it to share targeting data with other C3i equipped friendly units. Additionally, the Tessen has an Improved Narc Missile Beacon, allowing it to designate targets for missile attacks from friendly units and a TAG laser designator allowing the Tessen to spot for Arrow IV artillery missile attacks. For protection from enemy fire, the Tessen has nine tons of Durallex Ferro-Fibrous armor with CASE to protect against complete destruction in the event of an ammunition explosion.[1][5]

Weapons and EquipmentEdit

For long range combat, the Tessen carries a single Lord's Light ER PPC capable of hitting enemy units at extreme ranges. For close combat, the 'Mech has a single Diverse Optics Type 20P Medium Pulse Laser with which to defend itself.[1][5]


  • TSN-C3 
    Introduced in 3062[8] modified to be integrated into a standard C3 lance, the C3 variant removes the C3i computer and replaces it with a C3 Slave unit. The weight savings allows the Tessen to carry an additional Medium Pulse Laser. BV (1.0) = 1,090 (C3: 140)[9], BV (2.0)= 1,234[10][8]

Design QuirksEdit

The TSN-X-4 Tessen variant is subject to the following Design Quirk:[14]

'Mech GalleryEdit


  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 Technical Readout: 3067, pp. 68-69, "TSN-1C Tessen"
  2. 2.0 2.1 2.2 MUL online entry for the Tessen
  3. Combat Operations, p. 124, "Force Faction Table"
  4. Record Sheets: 3067 Unabridged, p. 104
  5. 5.0 5.1 Field Manual: ComStar, pp. 152-153, "TSN-1C Tessen"
  6. 6.0 6.1 MUL online entry for the Tessen TSN-1Cr variant
  7. Record Sheets: 3085 Unabridged — Old is the New New, p. 81
  8. 8.0 8.1 MUL online entry for the Tessen TSN-C3 variant
  9. Combat Operations, p. 125
  10. Record Sheets: 3067 Unabridged, p. 105
  11. 11.0 11.1 MUL online entry for the Tessen TSN-C3M variant
  12. Record Sheets: 3067 Unabridged, p. 106
  13. 13.0 13.1 MUL online entry for the Tessen TSN-X-4 variant
  14. 14.0 14.1 Experimental Technical Readout: ComStar, p. 4, "TSN-X-4 Tessen"