The Boating Forum - Scupper problem for aquasport boat

I just put my 2000 Aquasport Tournament Cat 161 in the marina for the first time this past weekend. The problem I'm having is when standing in the back of the boat, water comes in through the scuppers. When off the boat the scuppers are about 1" below water line. Is this normal for this style boat. it has a 90 hp johnson 2 stroke on the back. Max hp for boat is 115 hp so I dont think motor is too heavy for boat or could it be. Any help would be greatly appreciated.

TC,

I have a 21' Seaswirl CC (1999 Model Year) and my scuppers are slightly out of the water when I am off the boat, maybe 1-1.5 inches. I read a boaters magazine where-by it mentioned that scuppers should be about 4 inches above water line. I do wish mine were higher but I really have no issues with the scuppers draining. If I have 2 fisherman at the back while at drift water will come in a bit, thus I wish mine were higher.

my .02

You might want to consider installing Rabuds. They are a plastic cup with a ping pong ball inside. They work very well if you keep them clean.

Hmmm...scuppers below the water line when no one is aboard is not normal for any boat. Do you have extra gear back there? Extra batteries, fuel, etc.?

Ouch... water shouldn't come in with no one on the boat. Maybe check to see if there is waterlogged foam or something back there holding the stern down. On my boat the scuppers go under if two people are at the extreme rear. I have the rubber flap type scupper that does an ok job of keeping the water out. However after a couple hours of drifting or slow trolling we can get enough water sloshing around to be annoying. I made some scupper plugs out of foam and they work great!!!! If i'm in rough water or running an inlet I take the plugs out. Otherwise I leave them in and the boat stays dry all day. I have heard good things about the ping-pong type suppers.

My old scuppers were well worn so I switched to the ping pong ball style scuppers at the recommendation of a longtime boater.

My scuppers sit about 2" above the waterline, but tend to dip under when two people are at the stern. The ping pong style seems to work pretty well. No problem with drainage, and the range of water coming back into the boat is from zero to very little.

The only issue with this style is that they can be "fouled" by small pieces of debris that flow into them. I think that they will perform well if they can be kept clean.

You might want to consider installing Rabuds. They are a plastic cup with a ping pong ball inside. They work very well if you keep them clean.

I had a simmular situation and the Rabuds worked great, but I mounted the inner part that seals with the ball upside down based on talking with others that had installed them, I do not remeber exactly why this was receomended, but I believe it creats a better seal with the ball.

Also until you figure out why the scuppers are under water, If you can moving weight forward will raise the stern. I used two - 5 gal water bags in the anchor locker to do the trick, and later moved the batteries forward to solve the problem