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Posted: Mon Oct 18, 2010 10:15pm

Post Subject: Size of fresh water tank

We are having a 57ft narrowboat built; for holiday not live-aboard use, generally for 2 people, occassionally for 4. What would anyone recommend as a minimum acceptable capacity for the fresh water tank? (asking the question as a desire for a bow thruster appears to limit space for this tank; we have also been unable to find advice on our likely daily water consumption)


Posted: Tue Oct 19, 2010 9:23am

Post Subject: Size of fresh water tank

For daily water use try rogress/national/16.htm. Now I suspect that will not be much help unless you fill the boat with a dishwasher, washing machine and garden watering equipment but it is a start. Unless you start to analyse your own water use no one will be able to help on the consumption. For instance do you use a smaller washing up bowl or do you wash up in the sink. Do you shower once or twice a day or do you have a quick daily scrub round and shower twice a week. Then we need to consider how often you want to or are able to fill the tank and this will depend upon your cruising area to some extent. Now, I do not understand why the bowthruster limits water tank capacity because as long as the ballasting is done to accommodate it why can another water tank not be fitted (say) under a bed. Please also bear in mind that a very large tank may not have sufficient water changes to keep the water fresh. I would say you should aim for a minimum capacity of 100 gallons but ere on the large side because it will be expensive to retrofit extra tankage. Tony Brooks

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