Inferno Short Hand
Inferno contains a number of completely new ship classes, some of which are described here.
Carrier: Ship of any size whose primary purpose is to carry fightercraft, whether directly into combat or standing off and lending fightercraft support to ongoing operations as needed.
Frigate: Semi-canonical ship class, both the Hippocrates and the Iceni have been referred to as frigates; the normally accepted role of a frigate is that of a pocket destroyer, lacking a fighterbay and fighter support facilities/crews enabling the ship to be shrunk down to only slightly bigger than a corvette.
Dreadnought: Generally understood to be a destroyer-sized craft, but built for the sole purpose of ship-to-ship combat and lacking a fighterbay or supporting a very limited number of fighters purely for self-defense.
Planet Destroyer: Used only by the Inferno campaign. This is a juggernaut-sized ship specificately tasked to destroy planets, as the name suggests. It is equipped with Lucifer-type sheathe shields, effectively used to protect the hull from the explosion of a planet.
Super-Juggernaut: Equivalent of an entire armada of ships, the Super-Juggernaut is an almost invincible weapon. They're armed with huge anti-fleet cannons and moderately defended against bomber attacks; their main defense is sheer size and damage-absorbative potentional. Ships of this size are often referred to as "plot tools" rather than actual ships, as a single fightercraft cannot reasonably be expected to do them noticible harm.
Hive: Even larger than the Super-Juggernaut, the Hive is a massive Shivan ship.