[Public-List] Holding tank vent

[George Dinwiddie]

Randy,

On 3/4/13 4:00 PM, Randy Katz wrote:
> Greetings, Glen,
>
> I ran my vent tubes (2 of them) from the holding tank (in the same location
> as yours) through the bulkhead and up into the dorade over the toilet. No
> bad smells fliter back to the cockpit. The photo in the A30 collection of
> ideas and photos shows vents at the bow, forward-- what about water coming
> down them during heeling?

I've never had any trouble with water in the vents. I used standard 
right-angle fuel vents (one was already there from the Mansfield TDX 
installation done by the previous owner) and have them angled down and 
aft. The bow is pretty high, and the cockpit goes under long before the 
bow does due to heeling. Sometimes the cockpit dips when crashing 
through waves, but the angle of the vents doesn't seem to pick up any water.

Of course, if they did, it would likely just drain into the tank. I 
worked hard to eliminate any low spots where water could collect.

Putting both vents in the same place would seem to me to be ineffective 
for setting up a flow of fresh air. I've had lots of conversations with 
Peggie Hall (who has sailed on Calypso, BTW) and she recommended the 
strategy of venting on each side of the hull.

  - George

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