Waste tank in 240CS

[ZafSC]

Hi, winterizing my boat first time because all the shops are too busy. I hardly ever used the potty (Sealand brand portable toilet) in the cabin this summer, but I am sure there is sufficient water there to create freezing risk.
Attached is the picture of the holding tank under the potty. There are two pipes going out. So:
1) Where are those pipes are going? The waste plug is very close to the toilet, on the other side of the panel, right outside the hull. Is the big pipe going there?
2) Or, there may be another waste tank in the boat that I don't know where the location is.
3) If I remove the holding tank and empty it, am I safe for winter, or I should find the waste tank and empty it too?
4) The boat is in an outdoor storage and it is very hard for me to find a still open pump station and take the boat there. I have to do it in the storage myself.
Thanks in advance

 

[alldodge]

With that kind of tank I'm thinking you may not have a holding tank. How does the water get into the toilet, boats water tank or thru hull? Do you have a electric macerator where it gets pumped over the side?

If you do have a holding tank it will need to be pumped out. Put RV antifreeze in thru water input lines and dump it into the holding tank

 

[ZafSC]

I thought the small tank under the potty in the picture is called "holding tank". I think there is another tank called "waste tank", the main sewage tank, somewhere in the boat, because this is just a portable toilet.
The fresh water goes into the fresh water tank thru the hull plug. Since I couldn't figure it out and almost I never used it, last year I put antifreeze thru the waste plug on the hull, and also to the potty directly, to protect waste areas from freezing.
There is a macerator switch but I don't hear any motor humming when I turned it on. Actually I searched for a macerator pump, and I couldn't find it (Maybe it is hidden in the cabin or something, but definitely not in the engine area).
If there is a main waste tank (You refer it as holding tank) I don't know how waste goes into it. Because the gray water from the two sinks in the cabin area (one in kitchen and one in toilet area) goes directly outside on the holes on the hull. But when I put antifreeze (coloured) I see nothing coming out of the holes on the hull.

 

[alldodge]

The fresh water goes into the fresh water tank thru the hull plug.

Sounds like direct discharge over board
Be careful if true because there are restrictions depending on what body of water your on

 

[ZafSC]

The boat is on a trailer now. You mean there may not be a second tank other than the one seen on the picture? In that case I may remove the metal clips and pour some water on the holes outside of the hull, and try to see if it is showing up in the inside tank.

 

[ZafSC]

Ok, after some experimenting, I figured it out:

• The holding tank in the picture above is the only one (waste tank). I removed it and cleaned it completely.​
• There is a freshwater tank that provides the water to all the faucets, cold or hot. I put pink AF in it and watched the pink going thru all the faucets.​
• But one pipe goes thru the heat exchanger. The hot water pink didn't appear immediately, because it is big and takes sometime to fill it up. Since I didn't want to waste more pink, excluded the heat exchanger and shorted the hot water, the pink immediately showed up at hot water faucet.​
• I observed that all the dirty water at the bottom of the bathroom goes to general hull area in the engine department which is drained by removing the plug at the stern and tilting the bows a little upwards.​