Seacock consolidation. . . again

[kanderson4unc]

Hey everyone, up to my eyes in bottom paint and new thruhull schemes, and wondered if anyone could see an error in my thinking that, as per one of you suggested i can negate the engine raw water intake and enlarge the sink seawater inlet in the bilge area, so that it is used for both. On the same note, can i link the sink drain to the holding tank output with a diverter valve? so that either it acts as a sink drain, or as a holding tank output but neither at the same time? Currently i have a portable head, so i figure if i decide to fit a permanent one i can steal water from the seawater intake for the sink, if i have to. Still just trying to eliminate holes in the bottom of the boat. Any ideas? Thanks so much.

karl

 

[tiempo2010]

In my opinion as long as they are properly done there is nothing wrong with
through hulls. Most boats have 6 or 7. Properly means a flanged seacock or
through hull with a quality ball valve and fiberglass backing plates epoxied
to the hull. I think that your plan with the diverter valves creates a
riskier situation as you will have more connections in the boat. Here are
links to the best way to install seacocks and through hulls.

Seacock & Thru-Hull Primer/Pre Information by Compass Marine How To

www.pbase.com

Replacing Thru-Hulls and Seacocks by Compass Marine How To

www.pbase.com

Seacock Backing Plates / Alternate Method / No Through Bolts by Compass Marine How To

www.pbase.com

 

[dougpol1]

Karl I would think hard befor hooking anything else up to the engine raw
water intake. You could suck air from the sink not to mention drawing
food scraps through the engine. If you hook the two together use the
engine intake as it is low on the hull. You will still have a through
hull for the sink unless you are going to patch the hull. I am not sure
I would not rather have a through hull than a patch. As it stands you
only have three through hulls to shut off if you find the the bilge
filling. Many modern crising boats have 3 to 4 times that many. Now that
is a worry.

Doug

 

[pjacobs55]

What a great website. There's a wealth of articles at

Welcome To MarineHowTo.com by Compass Marine How To

www.pbase.com

well documented with text and photos. There's hours of good reading there!
Peter
#1331 'Sin Tacha'

 

[kanderson4unc]

Thanks, i have to patch up some old transducer holes, and thought if it didnt make much difference i'd just patch up the others too, and run some more hoses. Looks like i'll keep the raw water, seawater for the sink, sink drain, head out, and head intake. Once again, thanks everyone!

karl