The head on my boat is just behind the v-berth. It would be a long run to dump black water at the rear of the boat. Are long runs of tubing like this OK to do?Ours is 6" above the water under the overhang aft, aft and above the rudder. It is placed so that nothing can run down the hull, (facing the water) but there is no resistance from the water, either.
I'm on Lake Michigan where "no overboard discharge" is the law...I think. Anyway, I had to sign a paper at the harbor that says "there is no way" to dump black water (hose disconnected or no hoe). So, the previous owners either ordered the boat with the hole not drilled, or they had it plugged. Currently, I can't find where the hole was drilled (looking from the inside)...if it was previously drilled. Additionally, one of the hoses coming off the Y-Valve is plugged and just laying in the area under the Y-value. I am going to look around a bit to see if I can find where the hole might have been drilled. There is a hull liner on this boat, so I should be able to find a hole in the hull liner if it was previously drilled....why did they not design it with an overboard discharge to begin with that isn't a little day sailer
Hey, thanks very much. This all makes good sense and couldn't have figured it out on my own. We are headed there tomorrow to get this done. The first thing we will do is do a thorough search for any signs of the thru-hull...before drilling a new one. Thanks again!!On a boat like this the typical setup is to have a "Y-valve" which directs the outflow to either the deck pump out fitting, or to a diaphragm pump or macerator, and then to a below the waterline through hull which can be secured in NDZs. All of this equipment is typically installed under the V berth, keeping the hose runs as short as possible. This was the factory setup on the Pearson 34, Cal 33, and O'day 34/35.
An issue with this is that the line can loose vacuum through the deck fitting and "Y-valve", making it hard to pump out. One solution is to put the pump before the "Y-valve", but you run the risk of someone activating the pump without opening the through hull...uke
Another solution is to plumb a second pump out fitting into the tank, and eliminate the "Y-valve" entirely, and the likelyhood of vacuum leaks.
One last tidbit to minimize smelly hoses; make sure that any and all hoses are run so that they drain back into the holding tank, or through the through hull.
The backing plate is there. I used 1/2" G-10. I decided not to go with a round shape. I went with the shape of the base plate as seen in the picture below.Why am I not seeing a backing plate?
It should look something like this:...