Bought this kit from Cornwall models ,great fun to build and fairly easy ..At the moment I am in the process of motorising all the move-able parts,Crane rotate and lift lower,Thruster and lighting..My mate from work is a spark and shows me how "to do it " electrically or Im lost.The relay is home made and powers the Bow Thrusters if anyone wants to make one of their own I have a few better pictures to show the wiring in detail . Most will know of this site but if not you can get some excellent items for your ship builds with a good quick service my home made relays switches etc come from here
http://www.technobotsonline.com/