(the last two came up a lot in the search results, maybe it is a variant, or an upgraded version, like a Mrk2?)
Stats:
Dimensions :
-600 meter length
-300 meter width
-100 meter height
Standard Weapon Loadout:
-5 Light Turbolaser Batteries
-5 Light Quad Turbolaser Batteries
-4 Point Defense Laser Batteries
-4 Point Defense Ion Batteries
Variants Weapon Loadouts:
-4 Point Defense Quad Laser Batteries
These are images of how I would imagine the Vindicators weapons being layed out, with batteries on the dorsal, ventral, port, and starboard axis.
Background
As a bridge between a full Star Destroyer and of other smaller craft, the Vindicator design platform was of moderate success. Early models were more lightly armed and did not have the capacity to carry large ground forces. This was immediately seen as critical needs and made it into the design.
Indeed, the Vindicator platform became the hull for later craft, many very specialized designs. The most familiar is the Immobilizer 418 Interdictor Cruiser.
Characteristics
Those familiar with the Imperial Fleet find the Vindicator class and it's sister designs slightly cramped versions of larger Star Destroyers. In essence, this is largely true, particularly on the Immobilizer 418 class vessels.
Designed to fulfill the same roles as a Star Destroyer, Vindicators are similarly built with the same mission requirements with merely smaller armament and starship complements. Early model Vindicators had very little ground force capabilities but were capable of carrying a full wing of starfighters. None of these designs serve in the Vast Empire fleet.
Armament
While not carrying overwhelming firepower, the Vindicator class has a variety of weapons systems capable of handling most threats that may confront it. Long distance attacks are best handled by the starfighter complement, where close-in fighting is covered by a mix of anti-capital light turbolaser and ion cannon arrays. Plentiful quad turbolasers and anti-starfighter laser cannon prevent enemy fighters from getting a good approach for attacks.
The goal of the Vindicator design is to provide a robust Imperial presence wherever it appears and it is successful in this endeavor.
History
Initial deployment by the Vast Empire Imperial Navy Fourteenth Fleet began in 10 ABY, with years of Imperial service proven in other sectors prior.
Variants
Immobilizer 418
: Gravity Well Projectors x4, 4 point defense batteries, 24 starfighters
-Noted to be extremely expensive, rare, and most fleets having maybe 1.
​Unnamed Carrier
Variant
: Light Single Turbolasers, point defense systems, 72 starfighters.
-Must be a common alternate configuration because it is mentioned a lot about how the normal ones carry 24 TIEs while others are configured to carry a full wing (72).
-Probably sacrifices a lot of interior space from weapons and ground troops to fit all the TIEs and their equipment/maintenance areas/fuel/ammo.
Known ships
Cascade
Centennial
Challenger
Horizon
Herald
Northdown
Palisade
Pioneer
Pride of Ringwood
Progress
Sterling
Summit
Tradition
Vanguard