Com-Pac Yacht Owners Association

Com-Pac Model Specific Discussions => Sun Cats and Sunday Cats => Topic started by: ghsfusioneer on April 23, 2016, 06:38:02 PM

Title: centerboard pennnant tube water intrusion
Post by: ghsfusioneer on April 23, 2016, 06:38:02 PM
As the new owner of a 2007 Suncat, I took her out yesterday for the first time.  Perfect day - 70 degrees, wind 10-12kts , 2 foot seas, no clouds.  She sailed wonderfully, but I noticed the water gusher (well, a small streamlet) from the centerboard pennant hole - especially while doing over 5kts.   My first reaction was "OMG, am I sinking?"  But the water was draining out through the cockpit drains just fine, and the floorboards hid most of the stream.  I did some research on this forum and found it has been a known issue for years  and there are various solutions - so I thank you Suncat owners that have blazed the trail.   I will probably raise the cleat by another inch or so, add the rubber grommet, and ignore the water that still makes it through.  Comments? Thanks - fusioneer
Title: Re: centerboard pennnant tube water intrusion
Post by: Craig on April 25, 2016, 06:27:48 PM
Not really an "issue". Just hydrodynamics and the Bernoulli principle. In short don't worry about it. Small amount of water, drains out, no problem. Just make sure the tube is caulked at the deck and forget it.
Title: Re: centerboard pennnant tube water intrusion
Post by: ghsfusioneer on April 26, 2016, 10:41:04 PM
Thanks.  I shall do so.
Title: Re: centerboard pennnant tube water intrusion
Post by: LaGatta on May 11, 2016, 11:55:53 AM
So if I do not see water out the  centerboard pennant hole, it means that (1) still learning to sail my new to me old Sun Cat, I'm not going quickly enough, or (2) there is something wrong with the tube.  Right?

LaGatta, SC
Title: Re: centerboard pennnant tube water intrusion
Post by: Tom L. on May 11, 2016, 03:44:56 PM
one of the changes to help minimize the water coming up the tube is to add a block that raises the tube. Some people have added that block and extended the tube. Maybe the P.O. did that. The standard is a 3/4" thick teak block.

If you run the motor and get the speed up over 5 knots then sit toward the aft end of the cockpit you will most likely have some water come up the tube.

Tom L.
Title: Re: centerboard pennnant tube water intrusion
Post by: Tom L. on May 11, 2016, 04:02:25 PM
One other thought. Make sure the tube is still connected and sealed to the top of the trunk. Worst case it is not connected to the trunk and water would flow directly into the bilge from the top of the CB trunk. I assume your CB pendant is working?

Tom L.
Title: Re: centerboard pennnant tube water intrusion
Post by: Tom L. on May 11, 2016, 04:09:00 PM
oops i meant pennant.

Tom L.
Title: Re: centerboard pennnant tube water intrusion
Post by: ghsfusioneer on June 01, 2016, 12:07:52 PM
Just to wrap it up, I made a 1" high plastic block to fit under the pennant cleat, with a hole for the pennant that is only slightly larger than the pennant line diameter.  Only a few drops of water came in (and immediately drained) when sailing 5+ kts.  I now look at the water intrusion as an indicator that the boat is sailing well.  I consider this a success!