The Caldera is the premier stone breaker currently seeing action in the northern territories.
The Caldera acts as the spearhead for the navy's enforcement detachment. Capable of smashing through into coastal and tidal basins traditionally considered unassailable this breaker can clear a path at speed allowing for a dozen support vessels to follow in its cleared wake.
All cannons are elevated and loaded via mechanical assistance and can fire a variety of projectiles ranging from standard penetrators to explosive rounds that can be lobbed ahead to break up stonepack.
The ship is powered by a captive steam system for primary functions and arrays of sterling engines for auxiliary systems. A large central turbine around the collar of the superstructure also harnesses the strong convection current passed from the hull via heat pipes and acts to force air through the ship at high speeds.
The outer plating is created with an alchemic forging process that creates durable, insulated and most importantly, low reaction steel that molten rock cannot bind to.