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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 250 Specific Forum
 water ballast and aft berth drenching		  New Topic  Topic Locked
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Arlyn Stewart
Master Marine Consultant

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USA
2980 Posts
Initially Posted - 03/04/2005 :  19:39:43  Show Profile  Visit Arlyn Stewart's Homepage
This has been talked about a few times and I received a question about it in the mail today and had given it some thought during one of my night time wakings but then let it slip from my mind.

I've expereienced it twice, and several have posted about it to the forum. What appears to be a pint to a quart of water drenches the aft berth cushions in the area around the center board cable tube. I've only noted it after a launching which leads me to believe that it is a product of the launching routine. My theory is that with the stern down during launching, water fills the tube to some level and when the bow drops off the trailer, the pocket of air in the center board trunk either from being compressed or seeking escape upward, rushes up the tube and blows water from the tube in the process. After the centerboard trunk has vented, no additional water is found in the berth.

Others have posted that a simple solution is to pack the tube a bit around the cable, which seems to stop the problem.

Has anyone experienced this drenching at any other time than right after launching?

There could be other explanations, backing up too fast with the center board up for example.
Arlyn C-250 W/B #224

N/E Texas and Great Lakes
Arlyn's Sailing Site
Edited by - Arlyn Stewart on 03/04/2005 21:27:07

bear
Admiral

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USA
909 Posts
Response Posted - 03/05/2005 :  07:59:09  Show Profile
Arlyn, I have never expereienced this on "Brandy". Perhaps because she is launched down a fairly steep ramp, slowly and is floated off the trailer. The general stopping point for the trailer is when half the exhaust pipe on my Toyota is half in the water. Once the trailer winch is released Brandy is floating and then floated off the trailer. I do agree with your theory on this. Perhaps some willing sole could lay on the rear bunk and watch the center board cable tube during the launch. "Bear" on the hard in upstate N.Y. C250 #089
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Buzz Maring
Master Marine Consultant

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USA
1768 Posts
Response Posted - 03/05/2005 :  10:43:19  Show Profile
<font color="blue">... Others have posted that a simple solution is to pack the tube a bit around the cable, which seems to stop the problem. - Arlyn
</font id="blue">

The C-25 swing keels experience a similar water problem, and many swing keel owners have stuck a sponge down the tube that surrounds the keel cable ... as Arlyn suggested, that stops the problem.

This subject came up a year or two ago ... I don't think we ever figured out the physics of what's going on. In the C-25 water comes up the tube when simultaneously backing up and raising/lowering the keel ... 'weird!

Anyway, I thought I'd pass on the sponge idea to any of y'all who might not have seen the topic in the C-25 section.
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dubedoo
1st Mate

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68 Posts
Response Posted - 03/05/2005 :  19:51:17  Show Profile
http://www.catalina25-250.org/forum/topic.asp?TOPIC_ID=6521

Hi Arlyn. I had water coming in through the hose sometime after launching. The height of the hose as it came from the factory was lower than shown on Catalina diagrams and, as I visualize it, couldn't have been much higher than the waterline. I raised it by adding a piece of hose. I have no doubts that there are other factors and causes involved but so far my experience with raising the hose is that it substantially reduced the amount of water coming in through this location to just a few drops now and then. Backing up was not a factor when I noticed and observed the water coming out of the hose.

Steve C250 WB #702
Edited by - dubedoo on 03/05/2005 19:54:40
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s3tbuell
1st Mate

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47 Posts
Response Posted - 03/15/2005 :  16:48:33  Show Profile
Has anyone been in rough weather and had this tube leak? I have a WB and have never seen any leaking during lauching.
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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.