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Old 04-16-2012, 03:45 PM   #1
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Alfton's Avatar
City: Kemah, Texas
Country: USA
Vessel Name: Traveling Star
Vessel Model: Pilgrim 40
Join Date: Oct 2010
Posts: 164
Water Tank Replacement

I know some of you have replaced your potable water tanks.

What was the material of the old tank?

What is the material of the new tank?

If you chose plastic for your potable water tank, did the new water tank have a baffle inside to prevent sloshing?

If you chose plastic did you build a box around the sides of the new tank to support it?

Did you just strap it down?

How about some insight on water tank replacement

John Allison
Pilgrim 40 Hull #18
Kemah, Texas
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Old 04-16-2012, 04:03 PM   #2
City: North Charleston, SC
Country: USA
Join Date: Sep 2010
Posts: 4,385
My tanks are plastic from the factory. I don't know if there are baffles, but there's no box to support the tanks. They are self supporting. The bottoms sit on solid material and the tanks are strapped down.

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Old 04-16-2012, 05:11 PM   #3
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City: Joe Wheeler State Park, Al
Country: Cruising/Live-Aboard USA
Vessel Name: Serenity
Vessel Model: Mainship 36 Dual Cabin -1986
Join Date: Jul 2011
Posts: 1,250
My original water tank was corteen steel and was replaced with stainless steel by the previous owner. It was tabbed inot the fiberglass.
Cruising the Eastern U.S. Inland Waterways and Gulf Coast. Presently on the ICW in Louisiana and heading Back to Texas.
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Old 04-16-2012, 06:42 PM   #4
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City: Sanctuary Cove, Gold Coast
Country: Australia
Vessel Name: Eliza 1
Vessel Model: Halvorsen 42 Pilothouse
Join Date: May 2010
Posts: 115
My water tanks were stainless ... but as you can see what people can do with it .... they of course leaked ... with steel bolts in it !!!!
I replaced with plastic ones (2 of 200litre) no baffles cause they are only small I guess.
I made just a ridge where they sit into, and strapped them in, also put a bit of timber between the tank and the ceiling, bt I don't think strapping is requires if they sit nice in between the ridges and timber at the top
you can see more at The start of a nice project (clipper 30ft)
Have fun
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Old 04-17-2012, 01:10 PM   #5
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City: Everett Wa
Country: US
Vessel Name: Eagle
Vessel Model: Roughwater 58 pilot house
Join Date: Oct 2007
Posts: 2,919
the Eagle's two 200 gallon water tanks are SS with no baffles that I can see/tell. I would proable replace them with smaller plastic tanks. The same with the mild steel fuel tanks. I would try to use the old tanks as frame/support for the new tanks.
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Old 04-17-2012, 02:26 PM   #6
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City: Calgary
Country: Canada
Vessel Name: Blue Sky
Vessel Model: Nordic Tugs 42 Hull #001
Join Date: Oct 2007
Posts: 1,723
We replaced our water bladder last year with a plastic tank. The bladder was installed by the PO to add capacity and bring the boat back in trim; it was installed rather than a solid tank to allow access to other items like the hot water heater.

We found that the bladder leaked at the filler hose seal, even after replacing the tank, so took it out and installed a solid tank.

Meaning that we had to then completely rearrange the hot water tank, water pump, and holding tank to accommodate the new water tank.

Our new tank is rotomolded, which is the strongest and most inexpensive approach we found. Welded plastic tanks tend to be thicker, can leak more easily, and are very expensive.

The new tank, by the way, complements and balances (trim wise) our original aluminium tank.

Berthed in
Campbell River BC
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tank replacement, water tanks

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