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post #1 of 9 Old 01-26-2013 Thread Starter
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thru-hulls without seacocks?

I'm replacing the thru-hull fittings and hoses on recently purchased victoria 18. It seems odd to me there just through hulls and no seacocks or cutoff valves from hull below to deck. Am I missing something in understanding this concept such as scientific dynamics that water will not travel up below water line to deck? I'm planning to dock the boat in a lake for few months, but obviously wanted to make sure I'm doing this correctly. Thanks for any advice
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post #2 of 9 Old 01-26-2013
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Re: thru-hulls without seacocks?

The water will self level at balance, of course.. The only way it will end up in the cockpit is if the cockpit sole ends up below the water line ( sometimes when heeled, or too many people on board)

The main issue with no seacock is the inability to close things off in the event of a problem. I believe that some Pearsons were built that way too.

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".. there is much you could do at sea with common sense.. and very little you could do without it.."
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post #3 of 9 Old 01-26-2013
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Re: thru-hulls without seacocks?

Are those the cockpit drain lines? Some builders did that to avoid "dummies" closing them and flooding the cockpit and sinking the boat. Still, not a good idea, but just make sure you have double hose clamps on the underwater end of the hose.

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post #4 of 9 Old 01-26-2013 Thread Starter
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thru-hulls without seacocks?

Yes. They were initially without the double clamp and plastic thru hulls, I'm changing out for bronze and doubling the clamps. Thanks for the info/reassurance.
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post #5 of 9 Old 01-26-2013
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Re: thru-hulls without seacocks?

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Originally Posted by Stu Jackson View Post
Are those the cockpit drain lines? Some builders did that to avoid "dummies" closing them and flooding the cockpit and sinking the boat. Still, not a good idea, but just make sure you have double hose clamps on the underwater end of the hose.
Well, that clears a few things up. When my Nonsuch 30 was surveyed, the surveyor commented that the cockpit drains did not have seacocks on the thru hulls. I did not realize that some (most??) boats do. She said that was ok, but to make sure they are double clamped (they are) and have wooden plugs available in case of an emergency. But maybe I should see about swapping out for seacocks.
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post #6 of 9 Old 01-26-2013
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Re: thru-hulls without seacocks?

I owned a new Victoria 18 in 1981 and i do not recall anything below the waterline JUST the drains ?

It was left in the water with NO bilge pump and never got a DROP inside


A J24 has two fairly scary above the waterline drains also which would certainly sink the boat IF a hose failed and the sink drain would let in MUCHO water if the hose failed

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post #7 of 9 Old 01-27-2013
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Re: thru-hulls without seacocks?

Murphy, as in Murphy's Law, loves to hear people say, especially on a boat, "I've never had a problem in the X number of years I've had my boat."

If you have through-hull below the waterline or below the heeled waterline make sure you have an ABYC/UL 1121 seacock.
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post #8 of 9 Old 01-27-2013
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Re: thru-hulls without seacocks?

Except for on the Victoria 18 and the J24 there NOT what people are assuming its is much more like self bailing powerboat suppers

I also sail on a 1970 C&C 35 MARK I with and equally silly setup and if you DID have valves and closed them the cockpit would fill and FLOOD the cabin the FIRST time it RAINED

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post #9 of 9 Old 01-27-2013
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Re: thru-hulls without seacocks?

I've seen metal boats where the cockpit drains were simply tubing welded between the cockpit sole and the hull - very slick since they both eliminated seacocks, hoses, clamps etc. and added some rigidity to the boat.

One could probably do it with glass tubes in a glass boat but I'd want the tubes to be THICK.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
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