Epoxy Page

This faze of construction was the epoxy coating of the entire structure, inside and out.
As you can see here a epoxy paint was applied to the inside to completely seal the concrete from seawater penetration.
Here is a view of the inside area where sea water will flood in enabling he sub to submerge.
Here is a view of one of the fittings which will have flood valves attached.
Here is a concept picture showing the correct position of the conning tower.

Electric submersible with articulating entry