Yes, that was the standard arrangement from the factory in many models. Here is the 30+ diagram showing it. When I got my 30+ that thru hull would not close and was slowly leaking, so I had to address it immediately. If you have the original off-white ribbed bilge hoses, they are long past due for replacement. When I removed mine they split apart easily. Scary!
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I hated this arrangement for the reason you describe and because the thru hull was nearly impossible to reach- I had to lie prone on the sole and reach as far back as I could all the while scraping my shoulder on door sill. So I moved both scupper exits to new thru hulls under the stern counter and just above the waterline and relocated the sink thru hull with a dedicated seacock that is easy to reach. I can now close all below water thru hulls when I leave the boat. I do not currently have seacocks on the scupper thru hulls but may add them later. I used the drain fittings with the ball in them, which tend to clog and need frequent cleaning. Some people have removed the balls which improves cockpit drainage, but then you might be subject to some water entering the cockpit when heeled over.
With a new boat comes lots of questions. Has anyone rerouted the 30+ cockpit drains from the recesses of the bilge to the transom? The original design is a little sketchy. For one thing, the thru hulls must be open all the time, which I don't care for at all. Also, the port cockpit scupper...
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