So I discovered this little exploit and figured i'd post it up so maybe it can get fixed. Want a huge scary fleet fast? Build a ton of empty hulls. I did this with Huge hulls, set all your planets to build them. Empty hulls have zero upkeep costs. When some poor unsuspecting race attacks you, go design a nicy shiny battleship of the same size as that hull. Now go back to your empty hulls, pop one out of spacedock, and upgrade it. Make sure you click the upgrade all ships of this class button. Does it eat your cash reserves yes. HOWEVER here is where the exploit comes in. Your cash reserves are capped at negative 2kbc. so make sure you spend a few 100k or so to get the maximum value out of your fleet. Crush your enemies as fast as possible (because the upkeep on this fleet will keep you poor). As soon as they give in Demolish enough of the fleet to get a solid return on your investment. Optionally sell them to your allies who need military help/trade them for tech whatever suits you.