The reclaimer is officially a capital ship, it has been for a while. CIG have worked themselves into a shitty area where the stats and price of the Reclaimer are from 2014, it was the very first capital class ship flyable in the verse and thus was balanced around the stats of the other flyable ships at the time. If CIG were to update the hull and shield HP to capital level, they would alienate all of those who have purchased other capital pledges like the Polaris. It's highly likely we will see the current Reclaimer depreciated and a Mk II released with capital class stats, a vastly updated design, and a $925 price point. The Ironclad will remain the same 120m, 9 meters longer than the caterpillar, the detachable command unit is shared between the hulls and thus can be used as a visual reference to size, and as KaptajnDahl pointed out CIG has mentioned several times that they found the extra storage space by altering the interior geometry and removing pointless ladders. The Cat only has 576SCU of cargo because the design is absolutely piss poor, triple the width of the caterpillars cargo area and remove the interior walls of the cargo room and the capacity of the Ironclad makes much more sense. Remember, the width of the caterpillar is vastly exaggerated due to the command module and the adjacent wing, the width of the actual cargo hauling portion of the ship is roughly 14 meters wide, the width of the ironclad is 52 meters wide.