scuppers on 23' SC 1974
 

Took my first sea trial on a 23' Sceptre with scuppers that drain under the boat.
At cruising speed a large quantity of water came into the boat through the starboard scupper.
What is the fix for these underwater scuppers?
I have had a 1979 23' Sceptre for 20 years with drainage out the transom, no problem. Thanks, Michael. mrafferty100@gmail.com

I own the same boat with an io. Usually not a problem unless you have a bunch of heavy guys in the back - or some other weight issue i.e. big a** engine. If I do have some big'uns in the back, I use garboard plugs.

There is another 'fix' that a guy on here came up with - forget his name ( seems like a lot of the guys that were here 8-10 years have left - sort of a brain drain... ). Has to do with a piece of PVC that fits in the floor scupper, then a rubber glove's finger gets taped onto it - I know it sounds odd - but it does work really well. Lasts a few weeks then you have to 'change the rubber finger ' -It let's water drain out, and not come back in ( designed after one of those duckbilled garboard drains. Only thing, it reduces drain hole size a bit and is not meant to be left in boat when unattended.

Other than than - life the floor.

I've opted for the above two.

There should be a little wedge in front of the scupper hole on the bottom of the hull. This creates like a vortex that sucks the water down and also doesn't let water come up when underway. My boat also did this on one side. When I looked under the boat the wedge on the side letting up the water wasn't as defined as the wedge on the good side. I assume over the years of bottom paint and sanding it just go wore down. I made it more defined and it solved the problem. If there's no wedge then the back edge of the scupper tube catches the water while under way and it goes up into the boat.

Thank you, I was guessing this was the problem. I want to make sure I fix it right. I was thinking about a large stainless clamshell but if building up the size of the wedge with fiberglas will last longer I may go that way. Thanks again.

Look for scupper tube repair from Bushwacker....
Denny had a real nice post on his rubber glove vortex invention..
Ken "Fellowship" was the original creator of the glove fix...

Try this