: You may already know about this, but Tom Yost has info about adding a hatch
: opening that closes like a dry-bag. It's glued vinyl construction suits
: Tom's PVC skin material, but I don't see why a similar thing cannot be
: sewn together from a waterproof material & sewn to a fabric deck.

: I have also seen somewhere on the www where someone made a hatch like a
: miniature coaming, using wooden embroidery hoops sewn to the skin, and a
: fabric/neoprene hatch cover sealed by a bungy cord or drawstring.

: Maybe a combination of the 2 would work best...

: Sew a hatch ring to the deck fabric, then sew a dry-bag type of roll-up
: closure to it ?

: You could also add your original idea of a sea sock for hatches if you want
: additional sealing.

Hatches are easy, relatively, compartments that are watertight from the rest of the boat giving waterproof storage and floation arn't as easy in a SOF, can be done, not easily.

Bill H.