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>> Home > Forum > Hobby Chit Chat! > Leaking Boat!
Leaking Boat!
(492 views)
Author Message
NPJ
(Fleet Admiral!)





Forum Posts: 120
10th Aug 2018 14:49  
>> Permalink
mdlbt.com/44915

Is there a clever way to find where the leak is in a hull?

In this instance, boat sat static in water for eight hours and collected some water between compartment ribs in the centre two sections.
One of these sections is open and 'getatable' the one next to it has had planking glued down.

Leak seems not associated with either the front or back end and certainly not with drive shaft tubes.

No visible signs on the outside of the hull even using magnifying glass.

Depressed by the thought that may have to strip all the hull paintwork off!

Any ideas?

NPJ


NPJ
marky
(Fleet Admiral!)





Forum Posts: 261
10th Aug 2018 15:04  
>> Permalink
mdlbt.com/44916

Seal off the gettable area with polythene put the hull in the domestic test tank then using a cycle pump put air into the sealed area watch for bubbles appearing (like looking for leaks in an inner tube) No bubbles no leak, move to the sealed area drill a small hole enough to get a football valve adapter in and again apply pressure and look for bubbles if there are bubbles and this is where the leak is you could enlarge the hole that the adaptor was fitted through and pour in some sealer and swirl it around .or cover the whole of the exterior of the hull with a liberal coating of clear sealer .
Cheers Marky

NPJ
(Fleet Admiral!)





Forum Posts: 120
10th Aug 2018 15:26  
>> Permalink
mdlbt.com/44917

So quick a response and so practical an approach!

Many thanks for that Marky.

NPJ


NPJ
IanD
(Sub-Lieutenant)





Forum Posts: 4
10th Aug 2018 16:41  
>> Permalink
mdlbt.com/44922

Try covering the outside of the (dry) hull with kitchen or tissue paper and then fill the leaking compartment with water from the inside. With luck you will get a damp patch developing on the paper that will give you a pretty good idea of where the hole is.

Ian

RNinMunich
(Fleet Admiral!)





Forum Posts: 2075
10th Aug 2018 17:49  
>> Permalink
mdlbt.com/44923

Hi Neville,
Some intriguing suggestions here 😉 Good luck with the bicycle pump 😁
To be brutally frank! There are no short cuts to leak proofing an old wooden hull properly🤔
1 Internal deck / xyz mounting notwithstanding, if there's something wrong with the hull I want to know it so I can fix it - for good! If the probable source of the leak is hidden by some internal deck or mounting for xyz it has to come out!
2 To be honest, looking closely at your pics of the hull underside it's obvious she has had a few knocks. I would want to sand back, seal and repaint at least the red underside.
Having so cleaned the hull off I would closely inspect all joints around the keel and chines and look for signs of previous water intrusion and soaking into to keel especially - potential delamination / capillary action through the keel or joints.
When the hull is fully dried out and sanded back I would seal it with a couple of coats of Ezekote; the first coat you can thin with a little warm water so that it soaks into the wood better. Don't overdo it, about 10-20% water is enough.
Second coat pure resin. If it looks 'patchy' give it another coat of pure resin. Dries so fast all this doesn't take long. Had to do all this on my fish cutter hull, Gina2 - see Blog! Was a sieve to begin with, afterwards she passed her ballast test with flying colours😊 See also my Sea Scout Jessica Blog.
After that repeat your bath test, with ballasting to waterline, and KEEP AN EYE ON IT so you can see where any watter creeps in from!😉
If you take a short cut now you may well have to do it again (properly) some time😁 cheers, Doug 😎


Young at heart - slightly older in other places 😉 cheers Doug
Grant me the Serenity to accept things I can't change,
the Courage to change things that I can, and
the Wisdom to know the difference!
NPJ
(Fleet Admiral!)





Forum Posts: 120
10th Aug 2018 19:34  
>> Permalink
mdlbt.com/44926

well me thinks both ends of the spectrum of possible approaches are well covered with the posts so far.

I have been given a short reprieve as four of the family are coming tonight to stay until Sunday night, so no shed time allowed.

May be able to steal some time for sketches for the layout and wiring though..............................

This was not on my list of jobs!

Many thanks all.

NPJ


NPJ
onetenor
(Fleet Admiral!)





Forum Posts: 339
10th Aug 2018 19:49  
>> Permalink
mdlbt.com/44927

Would this be any good for RC wiring--https://www.banggood.com/Drillpro-Multifunctional-Ratchet-Cr... or this one--https://www.banggood.com/New-Multifunctional-Automatic-Wire-... If not any suggestions?

RNinMunich
(Fleet Admiral!)





Forum Posts: 2075
10th Aug 2018 21:20  
>> Permalink
mdlbt.com/44929

Evenin' John,
I have one suggestion!😉
Continue these 'tool' 😲😁 posts in a new thread, e.g. under Hobby Chit Chat, title 'Useful Tools and their Sources'. Then they'd be easy for all to find and we wouldn't be Hijacking other threads.
Cheers, Doug 😎


Young at heart - slightly older in other places 😉 cheers Doug
Grant me the Serenity to accept things I can't change,
the Courage to change things that I can, and
the Wisdom to know the difference!
mturpin013
(Fleet Admiral!)





Forum Posts: 48
10th Aug 2018 21:25  
>> Permalink
mdlbt.com/44930

I'm not sure either of these would solve the leak!
Wrong tread ?

NPJ
(Fleet Admiral!)





Forum Posts: 120
10th Aug 2018 21:42  
>> Permalink
mdlbt.com/44931

Visitors have set off late to avoid traffic so only now having to close down..........

I have had a quick look at the boat and there are a fair few holes inside the structure to block up if using air pressure.

To strip and paint up to the current waterline would be 'doable' for me and only need a red lead type finish and then seal. Not done that sought of think before but now on the list of possibles.

Certainly not going to be on the water for the Colwyn Bay Venetian Night at the end of the month!

Such is life.

NPJ


Attached Files - Click To View Large


NPJ
RNinMunich
(Fleet Admiral!)





Forum Posts: 2075
10th Aug 2018 21:56  
>> Permalink
mdlbt.com/44934

Go for it Neville👍👍👍
You won't know if you don't try!!
Good luck, fungers crissed orf ouy! (Shucks, typing like that ain't easy😁)
Doug, 😎


Young at heart - slightly older in other places 😉 cheers Doug
Grant me the Serenity to accept things I can't change,
the Courage to change things that I can, and
the Wisdom to know the difference!
onetenor
(Fleet Admiral!)





Forum Posts: 339
10th Aug 2018 22:07  
>> Permalink
mdlbt.com/44935

Sorry Doug I forgot.What do you think anyway? Answer me in Chit Chat🤔

RNinMunich
(Fleet Admiral!)





Forum Posts: 2075
10th Aug 2018 22:15  
>> Permalink
mdlbt.com/44936

Hi John, I just did, see Useful Tools & their sources in Hobby Chit Chat 😉


Young at heart - slightly older in other places 😉 cheers Doug
Grant me the Serenity to accept things I can't change,
the Courage to change things that I can, and
the Wisdom to know the difference!
onetenor
(Fleet Admiral!)





Forum Posts: 339
10th Aug 2018 22:21  
>> Permalink
mdlbt.com/44938

Gotcha! Ta

NPJ
(Fleet Admiral!)





Forum Posts: 120
11th Aug 2018 12:12  
>> Permalink
mdlbt.com/44950

Well the Eke-Kote has arrived, but so have the visitors.......

So no playing just yet.

I like the putting water inside and using absorbent paper on the outside.

However, I think I have spotted an issue around the Bow not noticed before. I do not think it can have contributed as in the wrong place, but potential issue for the future maybe.

Could make the difference on the decision.

NPJ


NPJ
RNinMunich
(Fleet Admiral!)





Forum Posts: 2075
11th Aug 2018 13:55  
>> Permalink
mdlbt.com/44953

Wrong place? How do you know that Neville?
Once inside the water will run/creep to the lowest position it can reach!
I don't like the idea of putting water INSIDE any wooden boat, 😲 not where it's supposed to be . Who knows where it creep to and soak in?
Doug 😎
PS Get the visitors involved!😁


Young at heart - slightly older in other places 😉 cheers Doug
Grant me the Serenity to accept things I can't change,
the Courage to change things that I can, and
the Wisdom to know the difference!
NPJ
(Fleet Admiral!)





Forum Posts: 120
11th Aug 2018 15:53  
>> Permalink
mdlbt.com/44955

Yes quite agree Doug.

Just assumed that as it did not appear in the two forward sections, but in the third and fourth, it would not emanate from the Bow.

I hope images show the 'issues' at the Bow end. Not noticed before the bath trial.

Although water does appear to have the ability to "move in mysterious ways", its dampness to perform.................

Cheers
NPJ


Attached Files - Click To View Large


NPJ
Colin H.
(Fleet Admiral!)





Forum Posts: 309
11th Aug 2018 19:15  
>> Permalink
mdlbt.com/44960

Looks like delamination, if water is getting in between the ply layers it will follow any gaps and porosity and could come out anywhere. I've had similar problems on my vintage restorations. The only thing to do is clean and repair any external damage then I would cover ultra fine glass cloth and Eze-Kote with at least 3 coats and rubbed down between coats. This should cure your problem and also strengthen the Hull.


Fair winds and calm waters,
COLIN.
NPJ
(Fleet Admiral!)





Forum Posts: 120
11th Aug 2018 20:11  
>> Permalink
mdlbt.com/44961

Thank you Colin.

That commits me to re working the whole of the paint job on the Hull!

Now if it were in camouflage /dazzle colours I could hide the join...............

Cheers.

NPJ


NPJ