Phraxships drew both their lift and propulsion from shards of Stormphrax, contained within huge spherical Phraxchambers somewhat reminiscent of First Age flight rocks. Whereas sky galleons of the First Age were generally confined to the same basic layout, Phraxships could have their phraxchambers mounted at almost any point on their hull. Commonly, the phraxchamber was mounted either on the top deck, raised up so as to give its propulsion duct clearance, or underneath the craft with its exhaust funnel mounted on one (or both) sides of the hull. Some phraxships had two phraxchambers rather than just one, giving them superior speed and lift, though likely at a significant financial cost.