Gary Warner wrote:
"Peggie Hall" wrote in message
...


Out a through-hull is the best place for a water tank vent...into the
bilge a VERY poor second.

Why is the bilge such a poor second? The water goes in the bilge. The
bilge pumps pump it out. What's the problem?

The problem is bilge pumps DON'T pump ALL the water out...which is why
most people do everything possible to keep as much water OUT of the
bilge as possible. 'Cuz the less water that goes into one, the less
there is to turn into a dark smelly swamp.

Aside from the problems with galley-sink and shower that you
mentioned how do these locations disallow you from flushing the
water vent by overflowing the tank as you fill it? You overflow
the tank, it goes into the sink/shower and the vent is flushed, no?

Provided you remember to turn on the sump pump--not too soon, or the
impeller will fry...too late and dirty water in the sump will combine
with the water in the vent and can get back into the tank and
overflow...break out the mop. As often as all of us just stick the hose
in the water fill and and forget it till water running out the vent
reminds us to turn it off, how many of us are that good?

Venting it overboard is the only solution that doesn't create more
problems than it solves.

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://69.20.93.241/store/customer/p...40&cat=&page=1

Peggie Hall wrote in :


The problem is bilge pumps DON'T pump ALL the water out...which is why
most people do everything possible to keep as much water OUT of the
bilge as possible. 'Cuz the less water that goes into one, the less
there is to turn into a dark smelly swamp.


When Geoffrey bought Lionheart, an Amel Sharki ketch, we were horrified to
find that all the sinks, shower, everything but the head, of course, dumped
all that grey water into the BILGE! Geoffrey wanted to put through-hull
fittings under the sinks to get it overboard, directly, but other things
needed doing, first, so it got put off.

After using this arrangement since last August, including a couple of sea
voyages, we've found that this Amel smells a LOT better than his Endeavour
35 sloop BECAUSE of all the grey water sloshing around in the sump down in
the full keel, instead of that little trickle of rain and seawater making
its way into the "biological soup" of the Endeavour.

I think the advanced biology growing in the Endeavour's bilge is killed off
by the antibiotic soap the dishes are washed in that also cleans the oil
and scum out of the Amel's bilge! Amel has a BIG manual electric bilge
pump but the previous owner put in a BIG Rule 4000 gph and a float switch
way down in the bottom. The Rule doesn't do well with food solids that
make it into the bilge, but I just pull the power to it and flush out the
solids with soapy water and the big Amel OEM bilge pump ever so often, when
I think of it.

For some crazy reason, this arrangement works BETTER! Any ideas why,
Peggie?

Larry

Larry W4CSC wrote:
For some crazy reason, this arrangement works BETTER! Any ideas why,
Peggie?

If it does work better, it definitely isn't due to any "antibiotics" in
dish soap...there aren't any, in dishwashing liquids or any other
"antibacterial" products. It can only be because you have to flush all
that garbage out the bilge fairly regularly to unclog the bilge
pump...which doesn't happen on the Endeavor. Any boat will smell a LOT
better if the bilge is actually flushed out a few times a year instead
of only relying solely on periodic doses of bilge cleaner and the bilge
pump.

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://69.20.93.241/store/customer/p...40&cat=&page=1