Commonwealth (WarShip class)

Commonwealth (WarShip).jpg
Production information
Manufacturer Ioto Galactic Enterprises
Introduced 2375 (Block I)[1][2]
2765 (Block II)[1]
Production Year 2375[3]
Use Light Cruiser[1]
Tech Base Inner Sphere[1]
Technical specifications
Mass 700,000[1]
Length 694m[1]
Sail Diameter 1,003m[1]
Fuel 5,000 tons[1]
Burn Rate 39.52[1]
Safe Thrust 1.5 g[1]
Top Thrust 2.5 g[1]
Sail Integrity 5[1]
KF Drive Integrity 15[1]
LF Battery None
Armament Block I[1]
24x NL55s
32x NL35s
8x NAC/35s
4x Killer Whale Launchers
12x White Shark Launchers
48x Machine Guns
Block II[1]
24x NL55s
32x NL35s
4x NAC/35
8x NAC/35s
4x Killer Whale Launchers
18x Barracuda Launchers
36x Anti-Missile Systems
Armor 700 tons of Improved Ferro-Aluminum armor[1]
DropShip Capacity 6[1]
Crew 50 - officers
140 - enlisted/non-rated
100 – gunners
120 - marines
110 - bay personnel (Block I)
56 - bay personnel (Block II)
Grav Decks 2 x 145m diameter[1]
Escape Pods/Life Boats 30/35[1]
Heat Sinks 3,200[1]
Structural Integrity 50[1]
BV (1.0)
BV (2.0) 98,421 (Block I)[1]
102,832 (Block II)[1]


The Commonwealth was the first WarShip to be produced domestically by the Lyran Commonwealth, although the production wasn't perhaps as home-grown as the term "domestic" might imply. The Lyran Commonwealth attracted the attention of Di Tron Heavy Industries shortly after initiating the first forays into design and construction in 2371; DiTron was already a successful WarShip manufacturer, with the Dart-class light cruiser in production and the Aegis-class heavy cruiser due to enter production[1] in 2372.[4] DiTron Industries had the know-how and experience, and businessmen in the Lyran Commonwealth had a firm grasp of financial chicanery. Avoiding the legalities of the restrictions the Terran Hegemony imposed on the sale of restricted technologies by DiTron, two months of financial artifice by the Lyrans led to the founding of a new company, Ioto Galactic Enterprises. Three years later the first Commonwealth-class light cruisers emerged from the Port Sydney Naval Yards.[1]

More compact in design than the Dart but also slightly heavier, the Commonwealth incorporated a number of technologies that were more advanced than those of the other non-Terran states; the most noticeable of these technologies were larger engines and more sophisticated armor. In common with the Dart the Commonwealth also incorporated six DropShip docking collars.[1]

The Commonwealth was a long-lived class and a solid design, although most of the class had been destroyed or otherwise taken out of service by the end of the Reunification War or shortly after. Many of the ships were scrapped so that the valuable germanium used in each ship could be used elsewhere, but this didn't mark the end of the class; when the various Great Houses began expanding their WarShip fleets rapidly in the closing years of the Star League the Commonwealth revisited the design and began work on a new production run.[1] The first three of the new Block II Commonwealths were in service in 2765, although these were actually refurbished Block I vessels;[5] production of freshly-built Block IIs began that same year. These new vessels differed most from the original Block I production run was in their armament, although the Block II also altered eighteen of the small craft bays found in the Block I to transport aerospace fighters.[1]

In the early Succession Wars Commonwealths were most commonly deployed as escorts for the indomitable Tharkad-class battlecruisers but the end of the class came with the destruction of the heavy aerospace industries within the Commonwealth and the destructive naval battles between the various Successor States.[1]

Weapons and Capacities[edit]

Both blocks of Commonwealths sported a solid array of capital weaponry consisting primarily of banks of Naval Lasers, with banks of four NL55s mounted in the nose and aft and another eight in each broadside. Mounted in each of the fore and aft quarters was a bank of eight of the light NL35s. A substantial short-range boost to the Commonwealth's firepower was the presence of pairs of Naval Autocannon – specifically a pair of NAC/35s – mounted in each broadside and the left and right aft quarters.[1]

Where the two Blocks differed substantially was in their remaining weapon payload. The Block I mounted a pair of White Shark launchers and a hundred missiles in every location other than the nose and aft, with a quartet of Killer Whale Launchers and forty missiles mounted in the nose. The Block I also mounted eight Machine Guns in every location other than the left and right aft quarters, with each bay of Machine Guns drawing on four tons of ammunition. In contrast, the Block II retained the four Killer Whale Launchers in the nose but replaced the paired White Shark Launchers in the other bays with a trio of Barracuda Launchers. The Machine Guns were also removed and replaced with six Anti-Missile Systems in each location.[1]

In addition to its point-defense systems, both versions of ship boasted 700 tons of Improved Ferro-Aluminum Armor appllied to all sides equally. The Commonwealth's armor protection was on par with early Terran Hegemony vessels of its weight class, while its engines provided it modest speed over the larger ships of its time.[1]


Block I

  • Bay 1: 22 Small Craft - 5 Doors[1]
  • Bay 2: 89,058 tons of Cargo - 2 Doors[1]

Block II

  • Bay 1: 18 AeroSpace Fighters/4 Small Craft - 5 Doors[1]
  • Bay 2: 89,208 tons of Cargo - 2 Doors[1]

Named Vessels[edit]

Lyran Commonwealth

See Also[edit]


The Commonwealth originally appeared in Strategic Operation Rule Book as part of Inner Sphere's "firsts" aerospace based technologically developed per faction.[6]

The Record Sheets for both the primary and variant of the Commonwealth-Class Light Cruisers are solely found in Field Report 2765 LCAF.

As of this writing, the Master Unit List entry for the Commonwealth does not include the ship's battle value nor any information on the Block II variant listed in this article.[7]


  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 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 Field Report 2765: LCAF, p. 23-24, "Commonwealth (Light Cruiser)"
  2. Strategic Operations, p. 14, "The Naval Factor"
  3. MUL online date for the Commonwealth (WarShip class)
  4. MUL online date for the Aegis
  5. Field Report 2765: LCAF, p. 5, "The Vacuum Fleet"
  6. Strategic Operations, p. 14 Naval Factor - Lyran Commonwealth's First WarShip, Commonwealth list and the year it was introduced.
  7. Commonwealth-Class WarShip (Standard) listing on MUL.]