Waterproof access hatches on a wooden deck have always eluded me. How is it done? I'm talking about the hatches big enough to get to the internals; hatches where you can't put a raised coaming around because they're on a flat/cambered deck; hatches that you need to get to every time you sail and often during a sail too.
On my MTB, I have alarge hatch aft of the superstructure so I can get to the motors and prop UJ's etc and another aft of that, though much smaller, for access to the steering gear. Both sit on an internal seat and are as close fitting as I can get them, but water still 'pours' through into the hull, especially in a sea of any kind.
Come on chaps, you must have a host of workable ideas I can steal!
Mike