Origin of the Vindicator

The Immobilizer 418 is actually a refit of the Vindicator‑class heavy cruiser. The Vindicator‑class ship’s tractor beams, point-defense weapons, and turbolaser batteries were stripped out during refit, making room for the massive gravity well generators and their associated systems. Not all Vindicator‑class ships were converted to Interdictor‑class heavy cruisers, and some remain armed and active in the Imperial fleet.
Capabilities
Tactical Fire: The Vindicator‑class heavy cruiser and the Immobilizer 418 were both designed to keep enemy ships from fleeing, by the use of either firepower or gravity wells. As a standard action, an Immobilizer 418 or Vindicator‑class heavy cruiser can forgo all attacks to provide tactical fire to all squares in a 2-square radius around itself. All enemy starships moving into that area must succeed on a DC 20 Pilot check or stop moving for the remainder of the round. Once a ship is within this area, no further Pilot checks are required, though if a ship leaves this area and then moves into it again, a new Pilot check must be attempted.
Vindicator-class Heavy Cruiser (CL 18)
Starships of the Galaxy, page 101.
Colossal (cruiser) capital ship
Initiative: −2; Senses: Perception +6
Defenses: Fort 54, Ref 17 (flat-footed 15) ; +15 armor, Vehicular Combat
Hit Points: 1,800; DR: 20; SR: 150; Damage Threshold: 254
Speed: fly 2 squares (starship scale)
Ranged: 5 light quad turbolaser batteries +12* (see below) and
5 light turbolaser batteries +14* (see below) and
4 point-defense laser cannon batteries +14 (see below) and
4 point-dfense light ion cannon batteries +14 (see below) and
tractor beam battery +16* (see below)
Fighting Space: 2×2 (starship scale); Cover: total
Base Attack: +2; Grapple: 66
Abilities: Str 98, Dex 14, Con —, Int 18
Skills: Initiative −2, Mechanics +6, Perception +6, Pilot −2, Use Computer +6
Crew: 2,551 (skilled); Passengers: 1400 (troops)
Cargo: 8,000 tons; Consumables: 1.5 years; Carried Craft: 24 starfighters
Hyperdrive: ×2 (backup ×8), navicomputer
Availability: Military; Cost: not available for sale (black market value 43,000,000)
* Apply a −20 penalty on attacks against targets smaller than Colossal size.
Light quad turbolaser battery (4 gunners)
Attack: +12 (−8 against targets smaller than Colossal), Damage: 4d10×5
Light turbolaser battery (5 gunners)
Attack: +14 (−6 against targets smaller than Colossal), Damage: 4d10×5
Point-defense laser cannon battery (5 gunners)
Attack: +14, Damage: 4d10×2
Point-defense ion cannon battery (5 gunners)
Attack: +14, Damage: 4d10×2 ion
Tractor beam battery (6 gunners)
Attack: +16 (−4 against targets smaller than Colossal), Damage: — (grapple +66)