The sea chest, all welded type 316, with a 2" groco strainer. 2" stainless groco ball valve on the main, then the strainer, then 3 1" take offs, for engine raw water, salt for galley, head, and forward washdown, with the 3rd as a spare for future watermaker, reefer cooling(?) etc. The only other thru hull below the waterline is the head exhaust. Designing, and then building this was a bit of a challenge, as the space is pretty constrained and it had to be strong like bull to hold everything. It ties into the battery boxes behind it and doesn't move at all. Next