Safe in the fighter's cockpit, Abe felt sheltered from the turmoil outside. His task was simple: Locate enemy attack craft, and blast them from the skies. The battle waged around him, fighters weaving between the lumbering airships, performing supersonic dives and strafing their machine guns across the decks of the frigates. The airships fired their broadsides to devastating effect. As he watched, A Federation cruiser took a hit to the bow and began to dip towards the ground in an inevitable, torturous descent. It crashed into the side of an Alessian frigate, dragging her too down to a fiery demise. The loss was mounting heavily on both sides. Soon the engagement would break off, and the two sides would retreat to fight another day.
As long as a dreadnought did not show up.

-Extract from SOAR - A Tale of Skies

The Federation Dreadnought is a vessel widely feared for its vast destructive power, and almost impregnable armour.
Dreadnoughts are used primarily as ground-attack airships, mounting around (can't be bothered counting) 45 4-bank bombing bays, each capable of dropping four primed TNT per comparator tick. The effect is a continuous stream of TNT capable of drilling to bedrock on less that twenty seconds. Ship-to-Ship weapons include rapidfire TNT cannon broadsdides in two decks of six each. Firestream AA weaponry is also mounted.

Lift is provided from Rift generators powering cells of plasmic superconductors. When Rift energy is passsed through them, a magnetic repelling force is created that lifts the airships from the ground. Rift generators use active Nether portals (Rifts in the novel) alligned inside containment chambers to collect Rift energy and store it in glass-based (crystal) accumulators. Propulsion is fundamentally similar, using a seperate Rift array except a "phasing-shift" is introduced to rapidly teleport the airship short distances. Any occupants within the hull are also teleported.

 Maybe this project wasn't such a good idea...
CC guys, this has nothing to do with your lore. It's from my story. But in terms of comparability: It's hull is bedrock. Not even obsidian is good enough to withstand the hits inflicted in my story. Obsidian cannont survive super-dense nuclear strikes after all! Perhaps it's a little OP for CC, but there you go. Source-accurate.