How much water - usage aboard

Discussion in 'Multihulls' started by Fanie, May 9, 2008.

  1. Fanie
    Joined: Oct 2007
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    Location: Colonial "Sick Africa"

    Fanie Fanie

    I want to know how much fresh water one should cater for per person per day on a vessel at sea, please. (Now I did say please :D)

    Drinking water - 0 liter (heck, who drinks water anyway :D)
    Kitchen -
    Bathroom -

    Where else ?
     
  2. Trevlyns
    Joined: Oct 2006
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    Trevlyns Senior Citizen/Member

    I'll get the ball rolling Fanie...

    I'm catering for 2 litres per person per day which I read was average. But it can include anything water based - like tea, coffee, fruit, even BEER! For long distancing, have a tarp or similar to catch rain water to replenish stocks.

    I'm sure the rest of the fellas will have very interesting views and I'll watch this thread as it progresses.

    Best!
     
  3. Manie B
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    Manie B Senior Member

    my reseach shows MINIMUM

    drinking = 2 litre / person / day to stay healthy

    kitchen = 0 use sea water to rinse

    bathroom = 0 = hang over the edge / swim :idea:
     
  4. multihullsailor
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    multihullsailor Junior Member

    Fanie, I drink water during the day! I suppose 1ltr - 2 ltrs a day depending on the weather and activity. Water which has run through a filter systems unless it's bottled. Then when/after the sun goes down I switch to the non-water stuff, provided I am not at sea. At sea I allow myself I glass of wine only.

    As to the total water consumption I figure on 5ltrs per person per day on average to include drinking, kitchen and basic bathroom hygene. If you like your shower, well the sky could be the limit! I'm planning of using a solar shower.

    Regards from the only cold :( and wet:mad: part of our country
    Roger
     
  5. multihullsailor
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    multihullsailor Junior Member

    What is it with this thread, two out of three replies from South Africa! It's supposed to be an intenational forum

    Roger
     
  6. Manie B
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    Manie B Senior Member

  7. Fanie
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    Fanie Fanie

    Eh Roger, guys and others :D

    The 2 liter of drinking water per person per day is pretty standard. Over and above that we take two liters per person per day coke for drinking PLUS what you drink when you socialize. Needless to say the coke is either just short or break even and the water is just used to make coffee with for the slow wake uppers. A lot depends how the fish behaves and how hot it is, but the drinking stuff is covered.

    I'm more worried about how much water is required like for showering. You get small gass water heaters that supply hot water on demand.

    I was thinking of having a sirculation system so that you can get your body temperature back up in cold weather and when you wash you flip a tap and the dirty water is discarded and not circulated again. An opinion on this ?

    First question would then be how much water do you need to shower in ?
     
  8. Fanie
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    Fanie Fanie

    He-he, Roger, I guess the international guys don't shower :D
     
  9. charmc
    Joined: Jan 2007
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    charmc Senior Member

    Fanie,

    Despite your slanderous comments about us non-SA residents, I'm willing to help you. First, though, need to clarify: we do shower, at least once a month, whether or not we need it. :D :D :D

    Here's one guidline that might be helpful. It's in English units, so you'll have to do some math in your head, but that's always good exercise. :) "if long, offshore cruises loom on your horizon, consider the minimum factors of one gallon of water per person per day and sufficient fuel tankage for motoring 400 nautical miles. any cruisers even suggest adding a factor of 50 percent to these numbers, but sailing more minimizes fuel consumption, and the use of salt water for bathing, washing clothes, and doing dishes can help to reduce freshwater usage." http://www.yachting-life.net/new index/frames3/right choice_frame.htm

    Plumbing set up so sea water is used for everything non-potable, with just a quick fresh water rinse after showering with sea water, has worked for me. 3-4 liters/day/person for everything should be sufficient for comfort with a reserve.

    Friday evening approaches. Time for some grilled salmon and a dry white wine with my beloved. Have a good weekend!
     
  10. Fanie
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    Fanie Fanie

    Worked, didn't it :D Ok, so you also shower once a month... big deal ;)

    So if I budget say 7 liters per person per day it should be enough. You'd shower in sea water and rinse with your 7 liters of fresh water.

    Sorted -
     
  11. Fanie
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    Fanie Fanie

    Next Q - the head.

    Still looks like a toilet to me. Why is it called 'head' anyway. If I guess it's because it's always squeezed into the smallest possible place and you bump your HEAD when you get up too quickly :rolleyes: Could this have any bearing on like whan you call someone 'sh1thead' ?

    I see there are some rinse HEAD's that uses water, the reservoir gets emptied in harbours or it seems where ever it is legal to do so. Not sure I like the idea too much.

    I see you also get baggs you add some powder or liquid and the stuff gell's up and the bag is later discarded of.

    I kind of like this option, it seems simpler and every one cleans up behind him / herself. The 'head is portable and you can store it ie under the bed, oops, sorry berth or where ever a suitable place is.

    I also have a port-a-potty where you add chemicals that breaks the stuff down and it can be discarded of as a liquid. Never used the thing though.
    Also portable and can be put away after the contents has been discarded of, ie some reservoir.

    Some opinion on this please.
     
  12. masalai
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    masalai masalai

    Yawn - stretch - fart - Ahhhhh thats better, now what is all this rubbish about drinking drugs (coke?)

    If you are soooo interested in providing water for passengers restricted in their intelligence capacity to bring their own PLUS some for the owner and more for the skipper send your friends a list of things needed for the trip.... or

    fit a "RO watermaker" and sell pure water made from sea water or whatever....
    http://www.outbackmarine.com.au/MasterPages/Manufacturer/ManufItems.asp?ManufID=77
    I am sure there are suppliers in saffa? - and check out the weight then in your multihull consider other things you could carry with that weight saving with about 40 litres ready (20l in HWS and 20l in another tank).... a bit expensive to install but well worth it in the long run...
    or look here...
    http://www.marinedirect.com.au/catalogue/c2431/p152812
     
  13. Meanz Beanz
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    Meanz Beanz Boom Doom Gloom Boom

    +1 M

    Desal has to be the answer for a weight sensitive machine like a cat, that is unless you have gone the condo route. Some in reserve to get back to port if the desal cracks it.

    That said I have never owned or run one, they might have issues but I believe that they are much improved these days.

    2 beans...

    MBz
     
  14. Trevlyns
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    Trevlyns Senior Citizen/Member

    Actually Roger, it's 3 out of 3! I'm a Saffa on loan to the UK!
     

  15. Fanie
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    Fanie Fanie

    Come on Masalai, what's this farting on the head thread :rolleyes:

    I still don't have a clue which head system is the more convenient and how much water one should keep for it. And these are my easy questions :D
     
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