Just like in an RV you cap it and secure the hose assembly outside of the living space
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.
If there is a wye valve there was likely a thru hull and was glassed over at some point that would have been good info to include to begin the search with
This I would highly recommend against. It would require a much stronger pump (much more expensive) and any foul ups would spread sewage all over the deck.
My boat partner and I once considered using a similar solution. However, we figured that pressurizing the holding tank (albeit briefly) wasn't a very good idea. Just too many potential disasters. We also were a bit concerned about where/how to store the dirty discharge hose. Storage on our Ericson 27 is at a premium as it is, without trying to find somewhere to keep a poopy length of hose.
Actually suction not pressure and with the caps on there is no mess how do you think they pump you at the docks
It was a metal tank and all the valves were in one place except the air line, which was in the engine room with the dual compressors. Each valve handle was painted a different color and there was a similarly colored spot under where the valve handle must be to show absolutely that the valve was closed, or open in the case of the overboard valve. No amount of rum or gin could get me to make a mistake!
After they pump you out at the docks they deal with the hose.
Well, we figured that we would avoid having the suction from a pump-out station pulling the waste through a pump (and to avoid having another pump all together). To do so, we thought that we might have a valve on the vent, and then pressurize the tank a bit via the toilet's waste pump. With the vent closed, the only place for the pressure to go would be via the deck plate and attached hose. Once the flow got going the pressure needed would be pretty minimal due to the siphon action as the blackwater flowed back down and out the overboard waste hose. --- Yes, it was a pretty hair-brained idea. Luckily we realized that, and stuck with the conventional thru-hull discharge and y-valve. And, we don't have 5 or 6 feet of poopy hose to store.
The deck pumpout should never be plumbed through a pump. It should ideally be through a dip tube through the tank top. Second choice is a dedicated outlet at or near the tank bottom.
Right. But if we were going to attach a hose to the deck fitting to discharge the waste overboard we would have to get raise the blackwater 4 feet or so, either with a pump or by pressurizing the tank an bit. If we kept the pump, I suppose that we could have valved it off in its own loop. But that would have been a bit complicated.
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.
uke+1000. Absolutely mandatory. Not just smell, wait till the surprise the next time you have to change the hose out, if it has old waste in it.
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...
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.
