Question about double hatched Green submarine in..

[Carey]

Beachboy, do you have a Chemtainer type with plastic &/or fiberglass? Their instructions call for SS screws, & for a watertight seal, silicone caulk then the screws. If you have a cover w/o the screws, the silicone caulk would probably hold the top on against most keiki action... their instructions PDF is:
http://www.chemtainerofhawaii.com/installation.pdf
Good Luck!