[Public-list] Cockpit drains above water line
Roger L. Kingsland
r.kingsland at ksba.com
Wed Mar 14 08:02:17 PDT 2007
Thanks J,
I bought a "Stonington Pulling Boat" last fall to use on the rivers and try
and keep up with my son who rows for his high school; what a great sport.
It's not a skull (I am too old and fat for one of those and I can't fathom a
boat that has a narrower beam than I) but more like a rowboat on steroids;
16' x 30", 60 pounds (Kevlar) without the riggers. Sounds like the Elvstrom
bailer would be perfect for removing misc. muddy water that accumulates
plus, I can do a field test for the A30 lazarette application; maybe get a
grant and publish a white paper.
Roger
----- Original Message -----
From: "J Bergquist" <jbergqui at gmail.com>
To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org>
Sent: Wednesday, March 14, 2007 10:37 AM
Subject: Re: [Public-list] Cockpit drains above water line
Roger,
the tubes are called 'pitot tubes' I guess they're named for Mr (or
Ms.) pitot. But I don't know that...
I think you'd be better off with an Elvstrom style bailer than a pitot
tube, but personally I don't think either is really worth the trouble.
The elvstrom bailers have a little door that prevents water from
coming back in if you are going too slow for them to work.
The Elvstrom-style bailers are pretty common in dinghies and work
well. I have them in my laser and my 5o5. In the 5o5 they are
remarkably effective. I have capsized that boat and gotten upright
with a boat full of water and had the boat dry after only a couple
minutes of sailing because they suck the water out so fast (note you
need a lot of breeze for this to work...) I particularly remember one
badly botched gybe in San Francisco last summer where we were dry
within what seemed like 30 seconds after getting the spinnaker full.
I have noticed that people use them in Soling and Etchells too. So
they clearly must work for displacement sailing also...
I have also seen them in rowing shells where they work nicely.
Later,
J
On 3/14/07, J Bergquist <jbergqui at gmail.com> wrote:
> Rachel-
>
> If you check out:
>
> http://www.lackeysailing.com/kaholee/kaholee.htm
>
> There are some great pix of someone replacing cockpit drains on a
> Pearson Triton. In particular,
>
> http://www.lackeysailing.com/kaholee/march2007/30707.htm
>
> Is a good link. But the whole project diary is interesting and the
> cockpit drains are referenced or discussed on several of the pages.
>
> Later,
>
> J Bergquist
>
> On 3/14/07, John Boor <mahseer at kos.net> wrote:
> > I have installed drains at the aft end of the cockpit and like the
> > results.
> > I used the existing "T" to join them together on each side,then rerouted
> > the deck drains into the origional bilge and engine exhaust through
> > hulls.
> > I then installed 2 new fitting on the transom for the bilge and
> > exhaust.
> >
> > John Boor
> > MAHSEER #380
> >
> >
> >
> >
> > > Roger,
> > >
> > > I like the idea of having aft drains in the cockpit. I have been
> > > reluctant
> > > to do this because I hate to cut more holes in the boat. Another
> > > though
> > > was
> > > to "T" them into the forwar drains, but then you are limited by the
> > > single
> > > thru-hull fitting serving 2 drains, so that did not make much sense
> > > either.
> > > Ater owning my boat for 30 years, I still have not done this...and I
> > > have
> > > filled the cockpit on more than one occasion, not intentionally.
> > >
> > >
> > >
> > > Mike Lehman
> > > ~~~_/)_/)~~_/)~~~
> > >
> > >
> > >
> > >
> > > ----Original Message Follows----
> > > From: "Roger L. Kingsland" <r.kingsland at ksba.com>
> > > Reply-To: Alberg 30 Public List -- open to all
> > > <public-list at lists.alberg30.org>
> > > To: "Alberg 30 Public List -- open to all"
> > > <public-list at lists.alberg30.org>
> > > Subject: Re: [Public-list] Cockpit drains above water line
> > > Date: Wed, 14 Mar 2007 04:58:23 -0400
> > >
> > > Hi Rachael,
> > >
> > > I haven't tried it but am glad you asked because I thought about a
> > > similar
> > > arrangement only locating the drains at the aft corners and running
> > > them
> > > horizontally (or slightly downward) straight aft through the
> > > lazarette.
> > > It
> > > might be possible to glass in some kind of flange at the bottom
> > > corners of
> > > the lazarette bulkhead (tangent to the cockpit floor) which would get
> > > the
> > > hoses a little higher. To get drainage while healed, I think it would
> > > be
> > > necessary to, A) have two exit points with each slightly below and
> > > outboard
> > > of the outboard edge of the cockpit floor; or B), have a combined
> > > exit at
> > > the centerline low enough that it is below the outboard edge of the
> > > cockpit
> > > when the boat is fully healed. I have a plan to make the lazarette
> > > watertight from the rest of the boat (and perhaps self draining) so if
> > > this
> > > type of drain leaked it wouldn't fill the boat and cause a potential
> > > "glug,
> > > glug". I don't know if there would be any problem with backwash in a
> > > following sea. One plus would be the hoses could be much bigger
> > > allowing
> > > the cockpit to drain faster. Of course, Gord Laco seems to have the
> > > fastest
> > > cockpit draining technique of all. Just put the spreaders in the
> > > water
> > > and
> > > let it pour out over the combings.
> > >
> > > Roger 148
> > >
> > > ----- Original Message -----
> > > From: "Rachel" <penokee at cheqnet.net>
> > > To: "Alberg 30 Public List -- open to all"
> > > <public-list at lists.alberg30.org>
> > > Sent: Wednesday, March 14, 2007 12:02 AM
> > > Subject: [Public-list] Cockpit drains above water line
> > >
> > >
> > > > Hi folks,
> > > >
> > > > I'll be replacing my cockpit drain plumbing soon - I plan to remove
> > > the
> > > > current gate valves and through hulls. I'm pretty sure I'll also
> > > > replace the drains in the corners of the cockpit with larger ones -
> > > the
> > > > originals look to be 1" or slightly less. I like the 1-1/2" bronze
> > > > Perkos (installed them on another boat), but will have to make sure
> > > the
> > > > above deck flange fits - I think it will.
> > > >
> > > > Anyway, on to my real question: I'm thinking about plumbing the
> > > > cockpit drains so they exit above the waterline, and I'm wondering
> > > if
> > > > anyone else has done that. I did search the list archives and find
> > > a
> > > > couple of posts from 2002, in which the idea was discouraged, but
> > > > nothing since then.
> > > >
> > > > I've nothing against through-hulls in general, as I believe that
> > > good
> > > > quality seacocks, well-installed, are fine. On the other hand,
> > > cockpit
> > > > drain seacocks are the one case in which you cannot close the
> > > seacock
> > > > when the boat is unattended, and certainly no seacock is as safe as
> > > a
> > > > solid spot of glass in the hull :-)
> > > >
> > > > Crude measurements show that there is probably something like 8+"
> > > from
> > > > the cockpit drain holes to the resting waterline.
> > > >
> > > > I did quite a bit of cruising on a boat that had the cockpit drains
> > > > exiting above the waterline (not an A-30), and it worked pretty
> > > well.
> > > > They left the cockpit in the front corners - like on our boats -
> > > and
> > > > then hoses ran aft and exited the hull on the transom near
> > > centerline;
> > > > in this way they avoided the problem of dipping below the waterline
> > > > when heeled. As a side bonus, the deep (below waterline) galley
> > > sink
> > > > drained by being pumped into one of the scupper lines (with a
> > > manual
> > > > bilge pump).
> > > >
> > > > I may very well replace the original set-up (but with better parts
> > > and
> > > > larger lines), but there's no harm in exploring other possibilities
> > > in
> > > > theory, anyway. Has anyone run their cockpit drains the way I'm
> > > > describing?
> > > >
> > > > Thanks,
> > > >
> > > > Rachel
> > > > 1967 Alberg 30, #221
> > > >
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