The main hatch coamings were built according to plans, but using 3/8” ply and 3/4” stock. I also added rails to the insides of the coamings to support the soft hatch battens and a soft seat.

Fore Coaming

Aft Coaming

Outer Coaming

Inner Coaming

Fillet on Bottom of Coaming

Finished Hatch

Testing Hatch Cover

Soft Seat

Seat In Use