[Strategia_In_Ultima]

If you mean how to find them in the VehicleSize file, just usse the Search command - usually Ctrl+F. But I don;t think you're an idiot so I don't think you meant that. If you meant ingame, well, just click the scrollbar next to the designs to the approximate location of the ship. Then, simply scroll up/down a little until you find it. There is no Search command in the Designs window.