Dreadnought-class

The Imperial Support Vessel was a type of ship used by the Imperial Navy. At least one was part of the Seventh Fleet's blockade over Lothal in 1 BBY, when it was passed by the rebel vessel Ghost, which was attached to the class four container transport freighter EF75.

Behind the scenes
The Imperial Support Vessel first appeared as a background ship in the 2018 Star Wars Rebels episode "A Fool's Hope." Unnamed in the episode, it gained its classification in the accompanying episode guide. The guide also confirmed that the vessels were based off the Star Wars Legends Dreadnaught-class heavy cruisers, which were first mentioned in the 1983 novel Lando Calrissian and the Mindharp of Sharu, and first appeared in the 1992 novel Dark Force Rising.