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Go Back   SailNet Community > On Board > Gear & Maintenance > Cockpit drain question
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Thread: Cockpit drain question Reply to Thread
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Topic Review (Newest First)
03-28-2012 01:34 AM
MedSailor
Re: Cockpit drain question

Quote:
Originally Posted by Barquito View Post
There are thru hulls with scupper flaps available from various sources.
That's awesome. Can you supply the link to that please?

MedSailor
03-28-2012 12:45 AM
mitiempo
Re: Cockpit drain question

Quote:
Originally Posted by Faster View Post
Thanks for that link, Brian... great, easy reading. Shame the illustrations and diagrams didn't make it...
True, but the anecdotes did.

I like the one about the 2 guys walking down the dock in Seattle. They stop by a sailboat named Dorade and one says to the other "Who had the crazy idea to name a boat after a vent?"
03-28-2012 12:41 AM
Faster
Re: Cockpit drain question

Thanks for that link, Brian... great, easy reading. Shame the illustrations and diagrams didn't make it...
03-28-2012 12:30 AM
mitiempo
Re: Cockpit drain question

Here's a link to a free downloadable book (pdf) by Rod Stephens that covers all aspects of sailboats and it is well written too. Yacht Design - Rod Stephens Book

In case you are not aware of who Rod Stephens was he was the man in the field for S&S - the designer half being his brother Olin. Rod was the one that made sure in trials that Swan got it right - there were things they had to correct too.

Cockpit design and drains is from page 80 - 86.

The entire book is a great read. Full of all kinds of ideas.
03-28-2012 12:10 AM
Barquito
Re: Cockpit drain question

Just to give you some ideas of the numbers from another boat, the Catalina Direct site said (if I remember correctly) that by installing a couple 1.5 inch drains, the C22 cockpit went from drain time of 12 minutes to 2 minutes. If your cockpit is proportionally small compared to the displacement of the boat, maybe that wouldn't be as much of a concern (unless off-shore).
03-27-2012 04:55 PM
benajah
Quote:
Originally Posted by mitiempo View Post
As Faster said flaps solve the water in problem.

Many cockpit drains are crossed under the cockpit as when heeled the lee one may be below water level otherwise, and they work well.

If it drains slowly an additional one may be installed in the transom, but I would keep the 2 originals.

I believe the op is in San Francisco and it is not in the hurricane belt.
I'm hauling it out this coming Friday for paint and keel inspection. They drain slower than they look like they should so I'll try snaking them and see if they have debris
03-27-2012 01:23 PM
mitiempo
Re: Cockpit drain question

Quote:
Originally Posted by MarkSF View Post
Has anyone ever installed an emergency cockpit bilge pump? My emergency manual one shifts a lot of water quickly, so do some electric bilge pumps.
No real reason to when you can let gravity work for you.
03-27-2012 01:13 PM
MarkSF
Re: Cockpit drain question

Has anyone ever installed an emergency cockpit bilge pump? My emergency manual one shifts a lot of water quickly, so do some electric bilge pumps.
03-27-2012 01:07 PM
mitiempo
Re: Cockpit drain question

As Faster said flaps solve the water in problem.

Many cockpit drains are crossed under the cockpit as when heeled the lee one may be below water level otherwise, and they work well.

If it drains slowly an additional one may be installed in the transom, but I would keep the 2 originals.

I believe the op is in San Francisco and it is not in the hurricane belt.
03-27-2012 11:12 AM
ccriders
Re: Cockpit drain question

I think that before reengineering the cockpit drains, I would fill the cockpit with water and see how long it takes to drain. If that is more than 4 to 5 minutes, and you are going off shore then "more better" might be in order.
Westerlys are pretty robust boats built for the harsh conditions around England and one would hope that they have addressed this issue adequately.
During hurricane briefings here, the marina superintendent recommends that all transom aperatures be plugged with nerf balls as boats tied to piers will take waves washing upon their transoms and that sea water will be forced into any exhausts, vents etc., so adding a drain to the transom might be problematic.
John
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