A single Star Destroyer could project considerable influence over a solar system in the name of the Empire: each can be deployed individually as both a forward operating base and as mobile weapon systems platform responsible for safeguarding multiple planets, trade routes and systems, and carried enough firepower to subdue an entire planetary system or annihilate a small rebel fleet. Besides the ubiquitous Imperial-class, there are numerous other classes of Star Destroyers sharing the basic "triangular" hull; the successful v-shaped designs are explained in Legends as reflecting the Empire's "Tarkin's Doctrine" military philosophy and originating from Sith ideological influence, and have been adapted by numerous factions for a wide variety of applications.