Okay another question for those of you who have done it. I have built a custom holding tank
since there was not one at all. Now I need to plumb it. I like this idea because it is simple and does not require electricity, but.....
With my limited understanding it looks to me that if you use the manual pump to pump overboard
the holding tank
the holding tank would just be full of raw sea water? Anyone have pratical experience with this setup?
Here is the text from Cali's state site where I found it.
2. Overboard discharge option after the holding tank.
A diverter "Y" valve is installed in the line between the holding tank and deck
pumpout fitting to allow the tanks
contents to be pumped overboard where legal
(in the ocean beyond the three mile limit). The "Y" valve must be secured to prevent over board discharge in the Chesapeake Bay
and it's tributaries.
- All sewage is pumped into the holding tank.
- Boat will use pumpout facility in port. When beyond the three mile limit, untreated sewage can be pumped directly overboard. If a type I or II sewage treatment system is installed, treated sewage can be pumped directly overboard as well, unless the boat is in "No Discharge" waters.
A "Y" valve is not required in this option. The deck
pumpout fitting and the overboard through-hull valve are normally pressure tight and will function alternatively as selected. Use of a "Y" valve however, will keep unused sections of the hose or pipe from being unnecessarily "wet" (filled with sewage) and provide an additional safeguard against accidental overboard discharge. If a "Y" valve is not installed and secured when operating within the three mile offshore
limit, the discharge through-hull valve must be so secured.