[C38] Holes in boats

[Chuck Finn]

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 <http://www.offshoredeliveryskipper.com>
>
>     ----- Original Message -----
>     *From:* Steve Smolinske <mailto:SSmolinske at rainierrubber.com>
>     *To:* Catalina 38 Listserve <mailto:listserve at catalina38.org>
>     *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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