I went to the fleamarket over the weekend and I finally found my Kaptain his ship. It is a all wooden model kit that I'll have to convert a bit but this thing is huge!!!
The model is from Early Learning Center. It is a European company and the ship is very high quality. It'll be a shhmae to mess it up but and ork has to do what an ork has to do! This ship when it is all done will be larger than a battle wagon so I may need to look through the Imperial Armour volumes to see if there is a larger ork vehicle that I can use the rules for.