Black Water waste. HELP!

Discussion in 'Announcements & FAQs' started by Nina Wood, Sep 11, 2022.

  1. Nina Wood

    Nina Wood New Member

    7
    Sep 11, 2022
    Sea Ray Sundancer 440
    1993
    Diesel Cummings 315hp
    So we bought a 440 sundancer. Holding tank is full and we can't find the seacock valve. Can you pump it out without opening the valve?
     
  2. BillK2632

    BillK2632 Well-Known Member SILVER Sponsor

    Jun 25, 2009
    Lake Norman, NC
    2014 Cobalt R5
    Volvo Penta V8-300 DP
    The seacock for the holding tank should be closed unless you want to discharge overboard. You should be able to just pump it out through the deck fitting. Then general process is pump it out, fill it with freshwater, then pump it again, then put in what ever treatment you use.
     
  3. Nina Wood

    Nina Wood New Member

    7
    Sep 11, 2022
    Sea Ray Sundancer 440
    1993
    Diesel Cummings 315hp
    Thank you very very much!
     
  4. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Also... keep in mind that overboard discharge through the seacock is not allowed until you are a certain number of miles offhsore (depending on the area). With the size boat you have, your marina will have a pump-out service. Ask a dock neighbor :)
     
    techmitch likes this.
  5. Soulshine

    Soulshine Well-Known Member

    Sep 25, 2016
    Seneca Lake, NY
    '83 SRV 360 Express
    Twin Merc. 454
    I hate when the PO doesn't empty the tank. :mad:

    You should find this and every other sea cock on your new boat. They're holes in the boat and they and their plumbing should be monitored/maintained regularly.

    Enjoy your new vessel and welcome to CSR...there's nothing else like it.
     
  6. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Chesapeake Bay, Middle River
    '91 250 Sundancer
    7.4 Bravo 1
    Obligatory…..
    upload_2022-9-20_17-16-31.jpeg
     
    Nater Potater and Nina Wood like this.
  7. spikedaddy99

    spikedaddy99 Well-Known Member

    Jun 11, 2008
    Prentice, Wi
    2005 500 DB
    QSM-11
    Geez. I read "black water taste" as I was scrolling through...yikes. You don't say where you are from, but chances are your seacock for the macerator either is missing the handle, or it is strapped down. Overboard discharge of waste is a big no-no and will cost you $$ unless you are (I think) 3 miles offshore in the ocean. Never legal in lakes.
     
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  8. Nina Wood

    Nina Wood New Member

    7
    Sep 11, 2022
    Sea Ray Sundancer 440
    1993
    Diesel Cummings 315hp
    Thank you aware of discharge regulations, I'm in the gulf of Mexico and know where it is legal to discharge. Just can't locate the seacock valve, there is a pump out station in the harbor just difficult to get in and out of the area with this 44ft
     
    Nater Potater likes this.
  9. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    Are you POSITIVE that you DO have an overboard discharge? Panels in the head can be labelled as such, but the panel can be generic and not actually have a macerator.

    Just follow the lines off your holding tank. One comes from the vacuum generator, one goes up to the pump-out deck fitting and then, if you have it, there would be third large hose going down towards the bilge floor.
     
    Nater Potater likes this.
  10. Nina Wood

    Nina Wood New Member

    7
    Sep 11, 2022
    Sea Ray Sundancer 440
    1993
    Diesel Cummings 315hp
    Yes not 100% sure about anything. We will check it out thanks.
     
    Nater Potater likes this.
  11. Woody

    Woody Well-Known Member

    Nov 20, 2007
    N. Wisconsin/Lk Superior
    2005 420DA
    Cummins 6CTA8.3
    I've spent most this season in a new location/marina. My whole dock is plumbed for pump outs, got a connection right behind my boat. Thinking about making the change permanent.:)
     
  12. GnrlPatton

    GnrlPatton Well-Known Member PLATINUM Sponsor

    624
    Jul 12, 2010
    Maple Valley, WA
    Current: 1998 370 Express Cruiser
    Sold:1988 230 Weekender
    Twin Cat 3116T
    I've seen marinas with that setup and I'm always so jealous. My marina has a pumpout location, but it can only accommodate small boats, so I have to either use a mobile pumpout service (at ~$50/visit) or use the various free pumpouts around the area whenever I go by one and have the time to do it.
     
    Nater Potater likes this.
  13. Cocktail Time

    Cocktail Time Well-Known Member SILVER Sponsor

    Jul 9, 2007
    Lake Lanier, GA
    1998 400 Sundancer, Garmin 840xs GPS, Furuno Radar, B&G GPS pilot etc.
    Cat 3116's, Westerbeke 7.6 BTD
    Ask your marina if you don't know the dock neighbors. Most areas have a "pumpout boat" that will come to each marina and pump your boat out for a fee. Easier than going to the pumpout station and it can be done when you are not there. It cost us $30 vesus $25 at the marina. Prices vary. The company we use is called "Mr. Stinky"! Great guy aka Lanier Pump Out... Best $30 I spend on the boat.
     
    Nater Potater likes this.
  14. jmauld

    jmauld Well-Known Member GOLD Sponsor

    Jun 9, 2020
    Carolina Beach
    2010 Sundancer 390
    2016 Sea Hunt Ultra 211
    Twin 8.1l of gas guzzling iron
    Our town public docks have a free pump out.
    How do you refill your tank to do a flush?
     
  15. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    You can put water into the tank through the pump-out deck fitting. Just don't stick your fresh water hose down into the pump-out deck fitting!!!! You might want to have a dedicated hose for that - or at least a short extension to screw onto your fresh water hose.
     
  16. jmauld

    jmauld Well-Known Member GOLD Sponsor

    Jun 9, 2020
    Carolina Beach
    2010 Sundancer 390
    2016 Sea Hunt Ultra 211
    Twin 8.1l of gas guzzling iron
    I’ll just use the neighbors hose.
     
    Maybe A Dancer likes this.
  17. Nina Wood

    Nina Wood New Member

    7
    Sep 11, 2022
    Sea Ray Sundancer 440
    1993
    Diesel Cummings 315hp
    I wish ours did but not that lucky
     
  18. Nater Potater

    Nater Potater Well-Known Member GOLD Sponsor

    Oct 19, 2020
    Southwest Idaho
    1992 300DA Sundancer
    Twin Merc Alpha I Gen II I/O's with 5.7 V8's
    Same age; smaller boat. My 300DA has a two-way valve behind the water heater, almost against the transom on the port side.

    Not on mine. It has a macerator pump that won't let anything go back into the tank from the waste port. We just run the daylights out of the toilet to flush large quantities of fresh water into the tank for the followup pumpout.
     
  19. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    PA
    Various
    Various
    I was replying to Jmauld, but... you must have a direct line to the tank in order to do a pump out, right? I mean, if the macerator was inline then you wouldn't be able to do a pump out. HOWEVER, you may have a Y-valve to divert the tank to either the deck fitting or the mac?
     
    Nater Potater likes this.
  20. Nater Potater

    Nater Potater Well-Known Member GOLD Sponsor

    Oct 19, 2020
    Southwest Idaho
    1992 300DA Sundancer
    Twin Merc Alpha I Gen II I/O's with 5.7 V8's
    I think my setup may have been an add-on. The macerator pump is directly downstream from the holding tank, then it goes to the Y-valve to direct the effluent to either the Waste pumpout port, or directly overboard. The way we get away with being able to use a suction pumpout with this setup is that the macerator pump is the same style of pump used to create vacuum for the system. The duckbill valves let the goop get sucked right out.
     

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