Main Hatch - Coamings and Rails Written On: Mar 20, 2019 Actual Date: September 2018 Category: Building Tags: hatches, seats 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. « Previous Post Adding the Cabin Tops Next Post » Making the Cabin Nicer Please enable JavaScript to view the comments powered by Disqus.