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Water in Center bilge

Discussion in 'General Discussion' started by zoomer2699, Sep 28, 2020.

  1. zoomer2699

    zoomer2699 New Member

    11
    Jun 13, 2017
    Lake Huron
    2006 44' sedan bridge
    twin 500 cummins diesel
    On our 2006 44 ft sedan bridge we have started to get water in the Center bilge ( bilge under staircase ) A brownish, coloured water is slowly seeping thru the bottom of the lowest part of this bilge compartment, just in front of the float switch. It takes about hour or so to fill enough for the pump to kick on . I have many times completely sopped it all up & dried it thoroughly. There isn’t any odour to this brown water .
    The harbour we are in has very clean water. Much clearer than what is oozing in.
    Has anyone ever had this problem ? Do I need to strip the hull & install new epipoxy primer & antifoul paint ????
    I can’t believe the hull is this porous. There isn’t a scratch on the bottom & since the boat is only in fresh water , new antifoul is only reapplied every 3 years . Any suggestions would be much appreciated
    Thanks
    Doug
     
  2. rwvw415

    rwvw415 Active Member

    304
    Jul 16, 2007
    Tennessee
    2007 48 Sundancer
    QSC 8.3 V Drives
    Welcome to the club! have you checked your Shower/ AC holding tank that is under the floor in the main salon? The pump in that holding sump tank will usually clog up with shower gunk and will over flow water into the area that you are describing. Unless you have a hole in the hull or a bad underwater connection where the sealant is bad it is not coming from your hull.
     
  3. zoomer2699

    zoomer2699 New Member

    11
    Jun 13, 2017
    Lake Huron
    2006 44' sedan bridge
    twin 500 cummins diesel
    Thanks for your response.
    There’s no hole or blemishes in our hull.
    The shower sump is working normal with no leaks around it. If you are sure that the fibreglass hull is not porous, I will check all the thru hull connections. Since I am the second owner, I am not sure if our hull had the proper epoxy coating under the anti-fouling paint. Do you know if there are any hollow spaces above the keel, that may hold water? There are times when the boat lists slightly, (holding tank and water tank are not a factor in this case). The boat is in dry dock for the season, so this is a good time to get to the bottom of my problem. Thanks. (Doug)
     
  4. Brent Nutting

    Brent Nutting Active Member

    355
    Mar 24, 2016
    Lk Saint Clair, Fair Haven, MI
    2002 480 Sedan Bridge
    10' Aventus RIB w/ 9.9 Merc
    Cat 3196
    Doug, can't be of any help on the water in your center bilge, but was just curious as to where on Lake Huron you keep your boat. We typically get up into Lake Huron 2 to 3 times a year and I have family on Duncan Bay up in Cheboygan.
     
  5. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2003 420DA, 6CTAs
    NA
    There are numerous threads here about water in 420/44 DBs. Trust me, your hull is not porous nor is an epoxy coating necessary under bottom paint. The red and blue hoses that the boat is plumbed with are all suspect due to the brass clamps that were used to hold the female fittings. You need to check your water manifold for leaks; your FW pump for leaks; the overflow from your shower sump is into this forward bilge. Most likely you have a freshwater leak from your onboard system. Turn on your FW pump, open the stairs, and listen for your pump to cycle. I had the shower mixing valve in the master head leaking only when the shower was in use that caused water to find the bilge.

    These boats have hollow stringers and are known to hold water. Go to the 420/44 Sedan Bridge threads and you will find a wealth of information. It will surely beat reinventing the wheel....Bennett
     
  6. Henry Boyd

    Henry Boyd Well-Known Member GOLD Sponsor

    Apr 24, 2007
    Newburyport, on the peaceful and serene Merrimack
    ‘09 Sabre 38 Hardtop Express “Serenity”
    Volvo D6 w/IPS450 Pods
    We have a different boat, but the same problem: colored water in a center bilge. The source turned out to be a bad press to fit plumbing fitting (same kind Sea Ray uses) that was occasionally dripping. The water ran into a compartment in the shower, then into a closed bilge area under the shower and then when the boat rocked the water spilled into the center bilge by way of one of the holes cut in the stringer for the drain lines. So a seemingly insignificant drip can lead to several gallons of water over a season.
     
  7. zoomer2699

    zoomer2699 New Member

    11
    Jun 13, 2017
    Lake Huron
    2006 44' sedan bridge
    twin 500 cummins diesel
    Hi Brent
    WE are on the East side of Lake Huron in Port Elgin Ontario. We head to the North Channel & Killarney every summer ! Have you been there ?
     
  8. zoomer2699

    zoomer2699 New Member

    11
    Jun 13, 2017
    Lake Huron
    2006 44' sedan bridge
    twin 500 cummins diesel
    The one point I need to emphasize is that the brownish water is seeping up through the floor from the bottom closed in compartment . So some how its getting into that compartment, maybe via a through hull fitting ??? Any other ideas of how the water is getting into the lower sealed keel compartment??
     
  9. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2003 420DA, 6CTAs
    NA
    When I bought my ‘07 44DB, my surveyor told me there was water in the center stringer. I cut a 6” hole just to the starboard side in front of the washer/dryer and removed 10-12 gallons of water. Once I fixed the dripping shower mixing valve, I stopped getting water in that stringer which the bottom of it is the hull or keel as you say. A lot of guys on here have cut inspection ports into the stringer between the engines in the ER and all have removed some amount of water.

    I have several documents/drawings from SR that detail water intrusion issues with these boats. I can see if I still have them. PM me your email if you want them.

    Bennett
     
    Nauti-Kal and Chris-380 like this.
  10. zoomer2699

    zoomer2699 New Member

    11
    Jun 13, 2017
    Lake Huron
    2006 44' sedan bridge
    twin 500 cummins diesel
    Thanks Bennett, that would be great to have the drawings. Our email is zoomer2699@hotmail.com
    Thanks so much for your assistance,
    Doug & Heather
     
  11. 370Dancer

    370Dancer Well-Known Member

    Oct 2, 2006
    Florida - Alabama
    1998 370 Sundancer
    380hp MAG MPI Gen VI with V drives
    Possible to fill the bilge compartment and see if anything comes out of the hull/fittings?
    I would also consider other possibilities such as fresh water system leaks or A/C water circuit leaks.
    It would be easier to diagnose if you were in salt water.
     
  12. Nauti-Kal

    Nauti-Kal Member

    118
    Jan 29, 2016
    LK St. Clair, St. Clair River, Lake Huron, LK Erie
    1996 370 Sundancer
    Raymarine C120 Multifunction
    Twin Mercruiser 7.4 V Drive 4BRL carbs
    i have a 370 DA and have the same problem. would like to see the documents/drawings if you don't mind.
    kkello219@gmail.com
     
  13. 370Dancer

    370Dancer Well-Known Member

    Oct 2, 2006
    Florida - Alabama
    1998 370 Sundancer
    380hp MAG MPI Gen VI with V drives
    Be specific. Is your issue forward or aft of the engine room bulkhead?
    It matters.
     
  14. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2003 420DA, 6CTAs
    NA
    I seriously doubt they will do you any good as they are specific to the 44DB, but I just sent them.
     

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