: This will get you on site, then choose Standard, Quarter turn, etc. (also
: note, there's little or nothing to snag you on re-entry)

Scotty

I had considered the dzus fasteners myself, but, was concerned that they would leak. Anything that has a moving part outside to inside HAS to have clearance, and therefore would allow leakage.

I was considering the Europian style, cabinet, touch latches, that you press on and they pop open, then press on them again and they close. The concern there would be just how much pressure you could get away with, before they popped open on you when trying a wet resque. And what material you would use for your seals to allow you about 1/8th " compression and still maintain a good seal. Would have to be soft and restore to original shape instantly. If possible, you could just put both hands on the hatch, press down with one firm little push and they would pop up in your hands. Then, another firm push and they would pop into the sealed position. All the hatch materials would be located inside and not subject to corrossion. Most I have seen are a heavy gage plastic with steel springs. Would be worth looking into.

Rehd