Castellan Class Cruiser Hadrian
The Hadrian is a Castellan Class Cruiser, an ancient Imperial design dating from the Dark Age of Technology. Castellan class vessels are able to project their shields to reinforce those of nearby ships. It is thought that these vessels have additional plasma generators to power this.
There is no evidence that The Hadrian retains the ability to extend it's shields, however reports do indicate that it has some reactor redundancy.
The Hadrian is named after the planet of the same name, a forgeworld on the northern border of Ultramar.