Waste dump

Hi Tom, I have a 2001 43. There should be a waste pump with through hull valve located at the forward side of the tank. The hatch to access this is between the master bed and the head door.
hope this helps you out.

HI Tom, on my 44 SS, the pump is located just where Trinimax indicated and the switch is located on the underside of the floorboard on the aft side of the hatch opening.

Just a head up...no pun intended... I have a Yr 2000 43' ocean. It was not equipped with a macerator or overboard discharge pump. Best you can do on my boat is throw a Y valve (located where Trinimax describes) to redirect waste from each head to the overboard discharge seacock rather than the holding tank. But if the waste is in the tank already then you can only "pump out" via the deck plate.

I word of disclaimer... I have found the head plumbing on my 43' Ocean to be among the worst planned and executed things I've ever seen on a boat. I've had to re-plumb much of it. And trust me when I say it was not designed to EVER be serviced.

That said, the heads are above the water line so moving the Y-valve to overboard discharge does cause the heads to backflow sea water. There may also be a check valve in the head. I am not sure about that. The heads (at least mine) are electric pumps with macerators so they will "force" the waste out the thru hull if the Y-valve is diverted in that direction. They don't depend on gravity to drain. And even if they did, Ocean put so many rises and falls in the head hose runs that there is waste always going against gravity and unfortunately "sitting" in the hose at all times.

I had my guest head hose clog. Long story short... I had to cut open the floor in the guest head and use a come along to pull out the 8ft length of hose that was completely clogged with 18 years of concrete solid waste. The original hose ran down into the bilge, did a complete 360deg turn then went up over a stringer forward and into the Y valve, then up hill into the holding tank. There was no hope of ever re-running a new hose the same way nor would I want to. I ended up running a much shorter hose, all down hill and into the aft end of the holding tank into a new fitting I installed. So my guest head now only flows into the holding tank but at least it's a short run and all down hill so no waste sits in the hose. I can't begin to describe how unpleasant and difficult this job was. And my solution to install a new fitting into the holding tank would have only been possible because a couple years earlier I had to completely rip out my master SR berth and cut open the floor to access the top of the holding tank in order to repair a clean out on top of the tank that had broken and was otherwise totally inaccessible. Thankfully I put everything back with screws and installed an access panel to the top of the tank. So I could removed the berth again and gain access without needing a sawzall and crow bar.

I love my Ocean but the head set up is a travesty of bad planning.

I guess I was lucky that one of my previous owners installed a macerator discharge pump for the holding tank before I bought the boat. I thought that something like that would have been standard. If there is one thing with Ocean, they do know how to surprise you

Several years ago, I started cleaning the plumbing lines with Sew Clean. Let it sit overnight. I do this once a year. Worth every $$. What bubbles up into the bowl... With your lines running all crazy, even more important to get rid of the uric acid hard scale. I'm sure there are other products out there too. Make it part of your maintenance routine.

what is Sew Clean? Is that a brand of something?

Just did the research. No reply necessary

I have a 2000 43' ocean as well. Mine does not have a macerator or overboard discharge pump either. Y valve connected to holding tank or over board from toilet direct. Can't pump out tank. Can only empty from deck hatch.