Hi Bob
I am watching your build with interest. I, and several members have built the Aziz. It's a great build and a lovely looking ship.
If you have not read the write ups here, then I recommend you have a scan through, as you are into a 'Can of worms' here with the deck and it's waterproofing ways.
As this ship has a flat rear deck it has to flush water over the side. To this end, you have to protect the lift-up hatch from water ingress. How you do it, is up to you, and we shall be interested in your ideas. Please feel free to ask questions at any time, as we are all here to help each other.
By the way, Welcome to the club and haven't you got a considerate Partner.
Cheers...Ken