Being a small model, both for space and weight, the prototype had the external surfaces quickly sealed so a flotation trail could be carried out. It would easily hold the RC gear in the stern compartment (between bulkhead and transom) but some ballast was needed in the bows. I stuck some lead in between the inner and outer hull sides.
The deck was then added over the hull. The two pieces covering the gaps between inner and outer hull sides were fixed but the rear section was not so as to have access to the RC gear.
The final items were the armoured steering position, a few deck hatches and some other odds and ends. Painting, well overall grey with black below the waterline and some rust and wear markings.
Currently sailing with an old modified two channel outfit, the rudder stick being turned through 90 degrees to give me "Tank Steering".
As I said at first, easy to build and capable of being scaled up if required. Maybe even scaled down if you like small stuff?
Glynn Guest