Hi Leaky. Nothing to show inside of this. I am only making it as a static model, to go on show with my model of HMS Woodpecker, in the same scale. R and R model engineering make a module to fit this boat. As far as I know you will only have to add a battery and radio. If you go on to u tube, and search for Nautilus drydock, you find a very comprehensive build on this model by Bob Martin over in the states. I hope this helps. Right, off to the local model boat club now. Cheers. Phil