The massive Allegiance-class Star Destroyer, also known as the Gauntlet Star Cruiser, is a dedicated fleet destroyer with heavy armor and no hangar bay, similar to the Tector-class. Unlike the Tector, the Allegiance-class has a large ventral bulb, which houses a massive reactor to create very powerful weapons and shields. The stern, thrusters and command module are almost identical to those of the smaller vessel, but the main hull is significantly longer and more sharply pointed.
The Star Destroyer's design omits any carrier or mothership role, it is purely for warfare; physical vulnerabilities are reduced and hull plating is extensive. The Allegiance design assumes and is dedicated to large fleet engagements, operating in concert with complementary warship designs. Since the Allegiance-class lacks a hangar bay, it carries no starfighter complement, nor any ground assault vehicles, and as such houses less troops than the smaller Imperial-classes.