William R. Watt wrote:
Wondering if, on a 15 ft pocket solo cruiser for inland waters, the head
can be located in the cabin and the holding tank ouside the cabin. The
idea is to run a hose through the aft cabin bulhead and put the tank under
the bench seat in the cockpit where the odour would be outside. If the
tank were directly under the seat in the cabin the discharge would be
stright down. But to run it at an angle through the bulkhead might not
leave enough of a gradient for the discharge to work. Is this a realistic
design problem? Is it worthwhile to try to put the tank outside?

Bill, the ONLY thing that would make ANY sense on a boat that size is a
portapotty--toilet & tank completely self-contained. If you don't want
to mess with carrying it off the boat, there are models that can be
permanently installed and fitted for pumpout...the only plumbing
required is a vent and pumpout hose to a deck fitting.

Otoh, installing a marine toilet and holding tank would require a
thru-hull for flush water intake, a hose and vented loop...another hose
to the tank, plus a tank vent hose and thru-hull. To gain any capacity
over a 5 gallons portapotty, you'd need at least a 15 gallon tank.
Storage space is in short enough supply on 15' boat...you don't need to
use up a major portion of it with a holding tank.

Properly installed and maintained, there should be no odor from a
porapotty OR a marine toilet and tank.

Peggie
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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://shop.sailboatowners.com/detai...=400&group=327

http://www.seaworthy.com/html/get_ri...oat_odors.html