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The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
When I first saw that picture of the foam under the tank, I thought you will just leave it there to stick with the hull and I started to puke Then I realized you did it the better way. Thanks for that! And another thanks for the new owner (if you will ever sell her).
I'll take a picture of the bow when I go out today. I belive they are about ~6 inches below the lights.
Its a lake boat so the roughest I've seen is 3' or so. I have had it heeled way over and they still stayed out of the water. So far I can't tell that I have any water going down the vents. I'm taking her down to the gulf next summer for some costal cruising. That might be a better test of the vents.
Looking back I should have gotten more pictures of the tank fittings and such. To late now :)
I took 1-1/2 PVC and used a torch to shape it to the tank. It runs from the clean out fitting down to the bottom of the tank. I can get all but an inch out of the tank. I generally rinse it down with some fresh water when I pump it it. Having two girls for crew means the head gets used a lot.
And speaking of fittings. I used fittings made for agriculture use. Those big fittings were about $15 a pop. Same as the marine fittings, just didn't have marine in the name and came loose in a cardboard box.
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by awetmore</i> <br />...What prevents water from coming back down those vent lines when you are in big seas?...<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">How bad could that be? An occasional few spoonfulls of water into the holding tank...
For a holding tank I don't think that a little water getting in is a big deal. I've wondered about other vent designs at the bow because that is where the water tank is on my Pearson.
The vents are a little lower than I remember them. Here is a picture of one side. The idea of having two of them is to keep enough oxygen in the tank to keep it from going septic. Septic = Stinky. Having the vents on the bow like this means there is always a cross draft on the tank. So far its worked well. You can't tell the boat has a head when you go below. <b>Vent Thruhulls</b>
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.