Fiberglass water tank part of hull repair

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thethrillisgone

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Hello all,
I am the new proud owner of a 1972 John Askham 43 which has a fresh water tank that is simply just the inside of the hull, in the bow area. It has not been used for quite some time and was sitting full with the same water for at least five years.as she was moored, and on Marina water, but now I need to move her.
Does anyone have a recommendation to perhaps coat the inside of the tank (Hull) to seal it? There are baffles in it sufficient enough to prevent the install of a flexible tank unfortunately and again, the baffles are part of the hull.
The inside of the tank has osmosis which really isn't a surprise for her age so without a solid idea to preserve the existing tank, I might be better off installing a new tank in the aft engine room where there is plenty of space.
I am a traditionalist, and would love to keep this beautiful classic original as much as possible, but practicality must prevail.
Any thoughts or suggestions are appreciated.
 
thethrillisgone said:
Hello all,
I am the new proud owner of a 1972 John Askham 43 which has a fresh water tank that is simply just the inside of the hull, in the bow area. It has not been used for quite some time and was sitting full with the same water for at least five years.as she was moored, and on Marina water, but now I need to move her.
Does anyone have a recommendation to perhaps coat the inside of the tank (Hull) to seal it? There are baffles in it sufficient enough to prevent the install of a flexible tank unfortunately and again, the baffles are part of the hull.
The inside of the tank has osmosis which really isn't a surprise for her age so without a solid idea to preserve the existing tank, I might be better off installing a new tank in the aft engine room where there is plenty of space.
I am a traditionalist, and would love to keep this beautiful classic original as much as possible, but practicality must prevail.
Any thoughts or suggestions are appreciated.
Click to expand...
Is that the same as a Bourne 43
 
I had another Askham design a Halmatic 34/Weymouth 34/ Humber 34. Mine was the only one fitted out by Seaward.

Mine had the Water tank in the bow also formed by the hull. I did not have osmosis in that area but I was alarmed at the stuff growing in the fresh water tank. I had to have a repair undertaken because mine had a v shaped stainless steel sheathing over the stem and one or two screws had gone right through the hull into the tank. I assume the water tank was put there as it balances the boat out longitudanely
 
Bandit said:
I had another Askham design a Halmatic 34/Weymouth 34/ Humber 34. Mine was the only one fitted out by Seaward.

Mine had the Water tank in the bow also formed by the hull. I did not have osmosis in that area but I was alarmed at the stuff growing in the fresh water tank. I had to have a repair undertaken because mine had a v shaped stainless steel sheathing over the stem and one or two screws had gone right through the hull into the tank. I assume the water tank was put there as it balances the boat out longitudanely
Click to expand...
It makes complete sense that the water tank is placed there for that reason. I can say that when I emptied the full water tank, the bow raised 6" in the water. I plan to put a filter inline to catch any fiberglass particles as a result of the osmosis but am concerned the quality of the water may never be good enough for drinking.
 
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