: Dear Bill,
: Thanks for your input. One last question.
: Does hatch ring need to be glued to raw marine plywood or should I
: glass the plywood before glueing the ring ?
: ---fit bulkhead
: ---glass plywood bulkhead
: ---cut hole for ring
: ---glue ring
: ---install bulkhead
: or
: ---fit bulkhead
: ---cut hole for ring
: ---glass plwood bulkhead up to the ring on both sides
: ---install ring
: ---install bulkhead

If it were me, I'd

fit bulkhead
cut the hole
glass the whole thing over the hole
cut out the hole in the glass
then install the ring
then install the builhead

Easier to cover a flat surface with glass and cut out the excess later than trying to fit glass around a hole.

Bill H.