Building a Sea Chest

[mbmcdermott18]

Strick, you have me thinking about the mounting surface now. The two raw water supply thru hulls and the pickup for the washdown pump will primarily be sealed on the finished surface (inside the chest). So I think those would be ok.

I am however concerned about the seacocks which will be sealed on the outside of the box. From looking at the unfinished side of other parts produced in a mold it seems like it would seal fine after the application of some 5200?

Thanks to everyone for the tips.