Quote:
Originally Posted by Dave_E
Hi All,
OK, we've established I have to get a real holding tank on the boat and get rid of the 1977 era Type 1 head. Going to do a custom installation, what size holding tank would you recommend? Our last boat (sailboat) had a 15 gallon tank and it seemed to be enough, but we never stayed on the hook like we plan to do now. Thanks for the input.
Dave
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We replaced our tank when we bought our boat. We went with the same size the manufacture had put in. It is a 25 gallon tank. With two of us on the boat it will just make it a week. With visitors on board with us (5 to 6 people), it barely makes it a weekend (if that!). Having tried to get a visitors to use the head properly, I can tell you that 1 out of 5 can fathom the issues a marine head/tank system has and so far only a couple have understood how filling a tank is an issue on a weekend anchoring out. We have a brand new 42 gallon tank all ready to go in the boat this winter. It is the largest tank I can get through the floor opening into the bilge area the tank is set up for (without cutting a larger opening in the floor of the galley).
I would go with a tank larger than 40 gallons if you can get it into the area and in the space you are wanting it at. 50+ gallons would be even better if you will have any guests on board overnight at all. You will not be disappointed with a larger tank.