[C38] Holes in boats

Mon Oct 3 16:29:42 EDT 2011

Max: The only thing that goes thru it is shower water, it is as you said, installed just after the mast. I like that it has a screen for catching hair.

Also as another aside see Lynn and Larry Pardeys comments, Oct Cruising world on the Cat 38, page 79. Don't like their price but good comments

Dick
  ----- Original Message ----- 
  From: Max Soto 
  To: Catalina 38 Listserve 
  Sent: Monday, October 03, 2011 2:45 PM
  Subject: Re: [C38] Holes in boats

  Steve,

  Dick's sump is about the same size of the Rule one.  I'm planning to install it on the bilge right after ot the mast base.

  Were do you have yours Dick??   Do you have something else that discharges on that container besides the shower??? like the sinks?

  Regards,

  Max 

  2011/10/3 Dick Kilroy <dickkilroy at comcast.net>

    Guy's Atwood makes a shower container and pump unit that we have on Dashaway in the bilge. It works and pumps thru the head sink outlet

    Dick
      ----- Original Message ----- 
      From: Max Soto 
      To: Catalina 38 Listserve 
      Sent: Monday, October 03, 2011 11:21 AM
      Subject: Re: [C38] Holes in boats

      Jeffry, Everyone that shares interest for the C38 is welcomed here!! 

      Steve, if the shower sump pump discharges on the head sink thruhull, if you put a bigger pump, you might be getting backflow on the sink.
      I was planning to remove the pump and install drain that leads to a real shower sump on the bilge like the one on the link. This will also help a lot with the soapy water odors..     
      http://www.defender.com/product.jsp?path=-1|51|26832|319659&id=680799

      Chuck, I hate to use check valves. The original bilge pumps thru hull on the stern is now for the manual bige pump only. I installed  two  more thruhulls, one on each side, both at same level  (higher the exhaust and manual pump thruhulls) for my bilge pumps. I have a 1500 primary and a 2000 secondary on the bilge, plus a high alarm system.

      Hope this helps, Max

      2011/10/3 Chuck Finn <charles at finn.ws>

        Holes in boats... everybody's nightmare!

        One of the problems I found with our bilge pumping setup is the long hose and size.   I have a 2000 as well and get quite a bit of head pressure.  I am planning on replacing the hose with a smooth bore hose that resists pinching and kinking.  I currently have two pumps working through the one hose, which does not increase volume but does ensure against pump failure.  I am considering plumbing the second pump (located forward of the shower sump, which I have disconnected and put the starting battery in) to a separate overboard hole.  The only thing stopping me is actually selecting where I am going to drill that second hole...  Probably the best place would be high on the port side, possibly following the path of the holding tank vent and then out the side.....

        Anybody have a better idea?

        Chuck Finn
        Mighty Quinn,  #114
        Great Lakes 

        On 10/3/2011 2:49 AM, Jeffry Matzdorff wrote: 
          Hope the listserve doesn’t mind me 'hanging around' and occasionally commenting.  Fact is, this listserve is really awesome.  
          You guys know your stuff and the emails are filled with lots of really spot on advise for others.

          Steve, this is an excellent point below. Brilliant idea to increase the output of the shower sump with a bigger pump.
          Other types of hull breaches such as losing a shaft or being holed by various objects are always possible.

          I lost a though hull bringing up a boat from Baja several years ago.  It was 0200 and a very rough, dark night. 
          Between the lag time of not knowing you have a problem, and the frantic tearing up of floor boards or getting a diaper over it from the outside will take many minutes.

          High water alarms are great and like you point out, secondary pumps are always a good idea.

          I have a y-valve on my big bilge pump and an 8' hose attached which I can move around and get water out when I am heeled over.

          Cheers~

          Captain Jeffry Matzdorff
          323.855.0191
          www.offshoredeliveryskipper.com

            ----- Original Message ----- 
            From: Steve Smolinske 
            To: Catalina 38 Listserve 
            Sent: Sunday, October 02, 2011 9:59 PM
            Subject: [C38] Holes in boats

            During the planning stage of one of my current projects (putting a sump in the shower sump, when we have a full crew we can never get the sump emptied and there is always "liguid" left sloshing and the current design just doesnt get all of it out, especailly bad on starboard tack) .  I got the idea to beef up the shower sump with an much larger than needed bilge pump so that in the event that we ever were taking on water we would have another higher capacity pump than the one that is currently installed.  Since Im cutting in the new sump hole its easy enough to make sure things will fit.   

            This thought process raised the question of how the capacity of my current bilge pump stands up against say a failed through hull (hull damage a whole different story)   I searched and searched the net until I found the following link that shows the amount of water at different head levels that comes into a boat through different sized holes.    Eye opening to realize that depending on the circumstance and which through hull failed I could loose my boat.   

            I have a Rule 2000 in the bilge, thats 33 gallons a minute,  a failed 1" through hull at 2' head level pumps in 28 gallons per minute, interpolating to a 1 1/2" through hull the amount of water coming in is 70 gpm.  If you have never removed your knot meter in the water, try it some time it is amazing the amount of water that fills the bilge before you get the cap on the opening.   Thought I would pass this link along so you can have the information for you own calculations.     

            http://www.tpub.com/content/advancement/14145/css/14145_191.htm

            Steve
            #312 Peregrine
            Seattle

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      -- 
      Max Soto
      C38 #198 ESTANCIA
      Puntarenas, Costa Rica

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  -- 
  Max Soto
  C38 #198 ESTANCIA
  Puntarenas, Costa Rica

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