Scupper below water line?¿

7mm

Seaman
Joined
Nov 12, 2017
Messages
58
Why would their be a rubber flapper scupper mounted below the waterline next to the drain plug?
 

Texasmark

Supreme Mariner
Joined
Dec 20, 2005
Messages
14,823
I had a Crestliner that had flappers on the splash well. Idea was to keep returning seas from coming in and filling the well when coming off plane, yet allow any water collected in the well to easily drain out.
If yours are under water, I'd say that you are mighty stern heavy.....like some upper scale bass boats I've seen.
 

cyclops222

Commander
Joined
Mar 21, 2024
Messages
2,781
20 years ago ? My boating neighbor almost lost his boat 1 day after launching it in the spring. I go down to the docks & his boat has water coming over the floor boards at the stern. I call him and we just get the boat on the trailer. It was a brand new Trophy boat with a large engine. Boats drains out on the trailer thru that very low scupper next to the drain plug. Zebra Muscles caused the flap to stay open.
Dealer said he was getting lots of flooding and rear of boat underwater calls.
How STUPID can a boat company be ???
 

StewartL

Seaman Apprentice
Joined
Jul 23, 2025
Messages
36
What is the scupper for that is at the bottom of the transom on a 2009 trophy.
That scupper is a drain hole for the cockpit (the area where you stand). It lets any water that splashes in flow back out automatically while you're moving.
 

kd4pbs

Petty Officer 2nd Class
Joined
Mar 5, 2012
Messages
157
Yes - like a girlfriend I once had for way too long... way too heavy in the stern and smells of dead fish.
 
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