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Posted: Thu Mar 29, 2012 6:49pm

Post Subject: Integral Water Tank

I wish to eventually own my own boat and live a board, mooring for up to fourteen days i am considering a larger than prefabricated intergreated fresh water tank. Can somebody tell me if there are any pit-falls with regard to freezing in Winter? and is there a way of dealing with this? Regards A R Pumfrett.


Posted: Thu Mar 29, 2012 7:58pm

Post Subject: Integral Water Tank

As you do not say I will assume that this is to be a steel canal boat. I think that even on the Scottish canals the ice is only every inches thick, not feet, so the lower part of the hull will sit in water that is a little above freezing. That heat will be conducted through the hull into the water so helping to prevent it freezing. Even if it did freeze then as long as the tank is not full, with an air gap above the water, the ice will expand into the gap and do no damage. I think that you need to be more concerned about the internal plumbing when you leave the boat for longer periods but careful design in using plastic pipes, keeping them below the waterline and insulating them will go some way towards avoiding problems - as will leaving the pump off and the taps open. Then there is the shower pump to think about. Tony Brooks

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