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 Is this a "volcano" thru hull?		  New Topic  Topic Locked
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woodyoureally
Deckhand

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USA
8 Posts
Initially Posted - 04/07/2016 :  07:35:00  Show Profile
I am not sure if this is the unsafe type of thru hull. Part of me says it is. Part says it isn't. Any ideas?
82 Catalina swing keel. Standard rig. Honda 9.9 XL OB

dasreboot
Admiral

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804 Posts
Response Posted - 04/07/2016 :  08:19:53  Show Profile  Visit dasreboot's Homepage
yep, a proper thru-hull would not be glassed in place. you would see threads, a backer plate (usually plywood) and a nut screwed down to the plate.
Todd Lewis
Eowyn 87 TR/WK C25 #5656
ARWEN 84 TR/SK C25 #4031
www.mainsailsailingschool.com
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RickR
1st Mate

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USA
25 Posts
Response Posted - 04/07/2016 :  17:54:52  Show Profile
Yep, I agree, that's a volcano. I had two of them..

https://www.facebook.com/1669093126665727/photos/pb.1669093126665727.-2207520000.1460076747./1681781128730260/?type=3&theater
RickR
Jamestown, NY
81 C25/SK/SR/Trad #2668
"Vind Dansor"
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Stinkpotter
Master Marine Consultant

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Djibouti
9080 Posts
Response Posted - 04/08/2016 :  07:01:11  Show Profile
Also, on the outside, you probably only see a hole in the hull. A proper thru-hull has either a countersunk, flat disk (which mine had) or a "mushroom" that holds it to the hull when the aforementioned nut is tightened inside. It's interesting, however, that you have a ball valve (good) rather than a gate valve (put in the older models).
Dave Bristle
Association "Port Captain" for Mystic/Stonington CT
PO of 1985 C-25 SR/FK #5032 Passage, USCG "sixpack" (expired),
Now on Eastern 27 $+!nkp*+ Sarge
Edited by - Stinkpotter on 04/08/2016 07:05:22
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Dave5041
Former Mainsheet Editor

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USA
3758 Posts
Response Posted - 04/08/2016 :  10:32:45  Show Profile
Interestingly though, the ball valve doesn't appear to be inline with the through hull.

Dave B. aboard Pearl
1982 TR/SK/Trad. #3399
Lake Erie/Florida Panhandle
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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.