I've built a framework to support the angled plates with angle section edges to the deck that will be within. To allow access to finish interior details and fit glazing the intention is to make the decks drop in to the angles. Once all the interior work is finished I'll then put a thin bead of sealant round the angles before dropping the decks in for the last time - the hope being that this will make the whole lot watertight but should access be needed in future the decks could be prized out without much if any damage.

This is the aft end.