Fresh water tank

Discussion in 'Sport Boats' started by Fire4161, Aug 19, 2019.

  1. Fire4161

    Fire4161 New Member

    5
    Mar 6, 2019
    2019 270 SDX
    MerCruiser 8.2 MAG ECT SeaCore Bravo IIIx Sterndrive w/Digital Throttle & Shift (380hp / 283kw)
    My fresh water tank holds 20 gallons. It seems to run dry very quickly. It is a brand new 2019 searay 270 sdx. Any suggestions would be appreciated....thanks
     
  2. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    What does "very quickly" mean?

    If there's no leak, then it's pretty simple... use less water! :) 20 gallons is 20 gallons and many sport boats have an even smaller tank. Plus, on a smaller boat, there's really not even the call for much water use like there would be on a cruiser. My 260DA had a 28g tank and we could easily go 3 days on it (that's overnighting, too). Be more judicious with your water use - conserve - it's like camping.
     
  3. Kwik

    Kwik Member GOLD Sponsor

    69
    Jun 14, 2019
    Indianapolis
    2004 Sea Ray 240 Sundancer
    2017 F150 Ecoboost 4x4
    Raymarine Axiom 9
    Raymarine Sirius 200 reciever
    5.0 Mercruiser w/Bravo III drives
    We can do 3 days with overnights on 20 gallons in our 240 DA. But, there is fresh water at several of the docks we go to just in case we need to fill up.
     
  4. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    Dang it...I wasn't the first one in with "use less water"! :)

    I'm quite the opposite of the two posters above. In the two week-long trips I've had this summer I've averaged 60-70 gallons a day of water consumption. Two adult showers, 804 bathroom visits for three kids and all the other random water needs. If nothing else I know now that I will have to buy a boat with a watermaker if I ever decide to take the admiral around the great loop in retirement. We are not water misers...
     
    Zim likes this.
  5. b_arrington

    b_arrington Active Member GOLD Sponsor

    995
    Feb 21, 2007
    Setauket, NY
    2018 Back Cove 34
    Cummins QSB 6.7 480
    You only have a finite supply of water on board, so need to determine how it's being used. Lots of trips to the head? Running the faucet in the sink? Filling the toilet? Heavy use of the pull-out sprayers?

    Once you do that you can cut back or advise your guests to conserve. Many folks (and kids) don't appreciate that the water supply on a boat is not like at home, and it will run out. Use good conservation practices like just enough water to flush, turn the faucets off right away, and quickly use the pull out sprayer.
     
  6. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    If it's yellow, let it mellow...
     
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  7. Kwik

    Kwik Member GOLD Sponsor

    69
    Jun 14, 2019
    Indianapolis
    2004 Sea Ray 240 Sundancer
    2017 F150 Ecoboost 4x4
    Raymarine Axiom 9
    Raymarine Sirius 200 reciever
    5.0 Mercruiser w/Bravo III drives
    Bah. Just jump in the water most the time. Only the wife uses the head and mostly only after dark. Can't get her to use the swimdeck at night like me. :p
     
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  8. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    I wonder if you could somehow adapt this to the back of your boat? It's called a "Bumper Dumper"

    [​IMG]
     
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  9. b_arrington

    b_arrington Active Member GOLD Sponsor

    995
    Feb 21, 2007
    Setauket, NY
    2018 Back Cove 34
    Cummins QSB 6.7 480
    No, no. Only on a Bayliner.

    Or a Carver Mariner.
     
    Kwik likes this.
  10. Blueone

    Blueone Well-Known Member SILVER Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
    20 gallons is a lot of water for a day boat... If you can check to see if you are emptying the tank all the way.. That might explain it... Or let us know how you go thru that much water... What you are using it for...etc.
     
    Last edited: Aug 20, 2019
  11. Captain Allen

    Captain Allen Member

    342
    Feb 2, 2009
    Coastal North Carolina
    370 EC 1994
    454 Mercruisers, straight drives
    The OP has another thread requesting instructions on the proper use of the Vacuflush system on his boat. I suspect therein lies a good part of his water supply problem.
     
  12. BRUCE BRECK

    BRUCE BRECK New Member

    12
    Jan 17, 2011
    Bonita Springs fl
    2019 27 SDX OB
    SIMRAD GO 12
    MERCURY V8 300
    I have the same boat, listen for the water pump to cycle with all faucets off, and power on, you may have a line leak causing more water usage then normal
    Good luck
     
  13. Fire4161

    Fire4161 New Member

    5
    Mar 6, 2019
    2019 270 SDX
    MerCruiser 8.2 MAG ECT SeaCore Bravo IIIx Sterndrive w/Digital Throttle & Shift (380hp / 283kw)
    That sounds like a great idea....I will when I get back on the boat again
     
  14. FootballFan

    FootballFan Well-Known Member PLATINUM Sponsor

    Jun 20, 2012
    Florida
    Marquis 59
    MTU Series 60
    You could double your water by purchasing a couple of 5 gallons containers. Find a place to sit one or two out of the way. Then you refill...
     

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