Re: [Paddlewise] pressurize the boat

From: Doug Lloyd <douglloyd_at_shaw.ca>
Date: Mon, 02 Apr 2007 13:58:09 -0700
I use an old Valley 7" hatch that was still serviceable but not ideal for 
continued use, then silicone in a tire fill valve. I use compressed air from 
a compressor (don't over do it, though my Nordkapp would blow the hatch 
before anything else due to its reinforced nature). Use soapy dishsoap 
liquid and water mixed, and brush it on. Bubbles are easily observed if 
present. Don't make the soap to runny with water. Tire stores do something 
similar if they don't have a dunk tank for testing tire mounting and 
repairs. Some kayaks, like those with plastic "H" seams, sometimes can be 
difficult to track down the leak if the air is migrated away.

I can't fathom (pardon the pun) even remotely why an experienced paddler 
would venture off into potentially heavy seas trusting only the reputation 
of the manufacturer, though I'm sure 99% do that. I've witnessed and heard 
first and second  hand boat leak stories. I think it is one of the few 
things that I find really upsetting to me to undergo while sea kayaking. 
I've had a breached hull myself while winter storm paddling on the remote 
shores of Vancouver Island and in-season touring, and once even spit my 
seams in storm-tossed logs. I much prefer to minimize the occurrence of 
these types of incidents (ergo my reinforced hull, seams, and testing 
regime).

I've heard of filling your kayak (very partially) with colored water, then 
testing for leaks breaching through. Admittedly, I'm pretty anal about this 
kind of stuff. It's a matter of taking responsibility for yourself. With a 
home made boat, I'd be just as rigorous, if not more so. I don't know what 
the building forums suggest. My method was adopted after a local kayak 
retailer showed me how he tested hid boats (all British heavies with he 
rubber hatches). Well, your YSMV (your sinkage may vary).

BTW, I doubt the wave height were as the reporter described. Most media 
reporting add an exaggerating factor. I always prefer authors and reporters 
to downgrade to as close as possible the real wave heights/wind velocity. It 
doesn't take much to cause an upset, test gear and boat to the maximum, and 
drain paddling energies. Readers looking for relevance need to hear the real 
facts so as to provide a realistic appraisal for their own yardsticks.

Doug Lloyd
Victoria BC



> Doug
> How do you pressurize your boat so you can look for leak?  I am putting 
> the finishing touches of a Gillemot Double and the leaks are a concern.
> Thanks in advance
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Received on Mon Apr 02 2007 - 13:59:15 PDT

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