How big of a holding tank?

[nph]

I am replacing the holding tank on my new to me boat. The space I have allows me to choose from two tank sizes. Either 28 or 35 gallons. I know bigger is almost always better, but the 35 gallon tank will be a little top heavy, and harder to fit in the space.

I have a electric flush head, but I am not sure what model. The boat is a 27' Regal Commodore 277xl. It will mostly be my wife, 12 year old daughter and myself. Most of the time we not be on the hook more then 2 mights at a time.

Can any one give me an idea of how much water the electric heads take to flush, or an industry standard of how gallons of holding tank per person per day.

Thanks

 

[Vic Willman]

The formula I use for calculating necessary holding tank capacity is 4 gals./person/day. That seems to work pretty well. Most men won't add quite that much to the tank, particularly if they use the swim platform every now and then.

Most women will add a little more, on average - so it seems to work out.

 

[nph]

Vic,

Thank You. With that the difference between 28 gallons and 35 gallons is 1/2 a day. To me it is clear the 28 does what I need.

Once again you come thru with the answers.

Scott

 

[Vic Willman]

We aim to keep things nice - your aim helps...!

[:-jump] [:-jump2]