Thu-hull and cockpit drainage

[Peter34]

Hi all,

I'm hoping for some thoughts on cockpit drainage. I have my E23 out of the water and doing a lot of maintenance. The current cockpit drain is only 1 drain that is 3/4". it drains through a ball check valve attached to the thru-hull. the actual outside opening of the thru-hull is about 1 cm in diameter. As you can imagine this would drain the cockpit in about 9 hours. I'm planning on adding some scuppers just directly through the lower portion of the transom above the waterline in case of a large wave swamping the cockpit.




The question is what to do with the thru-hull. See attached photos. The thru-hull itself doesn't look bolted through, just threaded onto itself I think and not sure that I trust the seal as is. My thoughts are:

1. Just fully delete the thru-hull altogether and put a scupper through the transom as low as it will go and another 6 inches higher and just drain the cockpit directly through the transom.

2. Remove and re-seal current thru-hull and use as indented with the addition of another transom scupper midway up transom

3. Remove, bore out and mount a larger thru-hull for better drainage (never done that).

Thanks for any thoughts.

-Peter

 

[gabriel]

You’re lucky to have gotten the check valve off without spinning that thru hull!

It depends on your boat. A scupper is ideal due to simplicity but not always practical or possible. And by scupper do you mean an actual fitting with a rubber flap / ball or just a hole the way my e25 has?

 

[Peter34]

As far as transom scuppers, yeah I was thinking basically just a hole. I actually thought about putting on some version of a heimlich valve on it - but I can't find that produced for boat purposes anywhere.

I'm honestly not sure exactly how to get the current thru hull even off if I wanted to do anything at all to it - either re-mount it or seal it over.

 

[Prairie Schooner]

. . .
I'm honestly not sure exactly how to get the current thru hull even off if I wanted to do anything at all to it - either re-mount it or seal it over.

The setup in photos below worked pretty well for me. However, it may not address your concerns. As I recall, the hardest part was finding a long enough carriage bolt.





Good luck!