[Public-list] Cockpit drains above water line
Mike Lehman
sail_505 at hotmail.com
Wed Mar 14 07:42:46 PDT 2007
Roger,
When was the last time you filled your cockpit with water? Are you trying to
engineer something that is really a problem?
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 10:23:28 -0400
Mike,
I assume, because of the squatting Gord so abhors, some water collects in
the cockpit aft. In "the more crazy Roger ideas that, fortunately for me
and my passengers, I probably won't get to before I die department", I have
installed the hoses from the engine area (exhaust, manual pump, electric
pump) along the inside of the hull at the centerline. I had thought of
raising the floor of lazarette a couple of inches (w/ FG panels except where
the hoses are which could be filled with self leveling silicone) and curving
the new floor so it would drain through openings in each side of the hull
forward.
It occurred to me the leeward hull might (probably) be under water but only
when the boat was moving at a decent clip. So, I thought of one of those
self bailing cockpit drains I remember seeing on Sunfish but don't know the
minimum speed at which they remove water rather than add it. I guess if one
doesn't care about having a little wedge of water inside the leeward side of
the Lazarette while healed, it isn't too big a deal but I also thought of
reversing one of those "L" shaped tubes (about 1/4" diameter and 2" at each
leg) one sees sticking out of airplanes (something to do w/ measuring air
speed, I think) thinking that would do a better job of sucking the water out
(besides, think of the stories I could make up about what those tubes do;
everything seems to hark back to steam propulsion). I actually asked a
scientist neighbor to look into the tube thing but he didn't seem to share
my enthusiasm (insanity).
Soooo, one advantage of this scheme is holes could be drilled at the low
outside corners of the lazarette bulkhead so small volumes of "slope
sustaining" water could drain through the lazarette. Having gravity
drainage isolated from the rest of the hull might also make storage of
materials that go "kaboom" a little safer but probably not to the extent one
would want to store cooking gas there. Is it any wonder I don't sleep that
much?
Roger 148
----- Original Message -----
From: "Mike Lehman" <sail_505 at hotmail.com>
To: <public-list at lists.alberg30.org>
Sent: Wednesday, March 14, 2007 9:19 AM
Subject: Re: [Public-list] Cockpit drains above water line
> 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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>
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