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Old 05-10-2015, 12:06 PM   #1
City: Bethel Island
Country: USA
Vessel Name: Lionheart
Vessel Model: 54 Defever PH
Join Date: Jul 2014
Posts: 1
Leaking S/S water tank

I have a 2000 Defever PH which has developed pin hole leaks in the water tanks (2 x 200 Gal.) What are my options as I dont really want to remove a substantial portion of the sole to remove (Replace or repair) them. They do have three 12" inspection plates on one side (Of each tank) but the back and bottoms can not be viewed. Anyone know if these tanks are baffled ?

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Old 05-10-2015, 12:41 PM   #2
City: Hotel, CA
Country: Fried
Join Date: Sep 2011
Posts: 7,577
I'd contact a local welder to come look at it. If he can access it he can repair it in place.

Craig - AKA Some Clueless Idiot

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Old 05-10-2015, 12:56 PM   #3
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City: Cape Cod, MA
Country: USA
Vessel Name: Island Seeker
Vessel Model: Willard 36 Sedan
Join Date: Oct 2007
Posts: 861
I helped a friend with a similar problem. His tanks had failed at the spot welds that held the baffles. They had been made of 316 but not 316L stainless. If that is true in your case, then welding will not make a lasting repair because it destroys the stainless property of the steel. Perhaps the holes could be silver soldered or patched with Por15 paste if they are assessable.
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Old 05-10-2015, 01:05 PM   #4
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City: Friday Harbor, WA
Country: USA
Vessel Name: Hobo
Vessel Model: Krogen 42-120
Join Date: Nov 2008
Posts: 4,405
With 3 inspection ports, I'd be surprised if tank didn't have baffles.

Can you see any discoloration on the outside of the tanks(s) in-between the inspection ports? If there is, that may be where the baffles were welded to the interior walls.

If it was me, I'd open up the inspection ports see what the insides look like. You'll need to any way.

We had a leaking SS water tank on our last boat. We were able to remove the tank and found a few pin hole leaks along a bottom seam. We had a 1.5" by 3' piece of angle iron welded along the outside of the seam. I have been told that the leak was not a surprise on SS water tanks.
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leaking water tank

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