[Rhodes22-list] anchoring obsession

[Peter Thorn]

Bill,

Two years ago, sailing down the East River, the current was about that.  In
Beaufort, NC (where Bill W anchored) there can be some pretty strong
currents as the Altlantic makes it's way through the inlets during tidal
changes. We're planning a Cape Lokout trip later, so it's possible.  I don't
think anchoring in a 5 knot current is likely, but if it can be done I sure
would like to know how.

PT



----- Original Message ----- 
From: "Bill Effros" <bill at effros.com>
To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
Sent: Saturday, January 14, 2006 2:37 PM
Subject: Re: [Rhodes22-list] anchoring obsession


> Peter,
>
> I'm back.  Just like you, more interested in this than in what I'm
> supposed to be doing.
>
> I'm going to break my replies to your comments into subject headings so
> anyone trying to follow doesn't have to read the whole thing.
>
> Do you actually sail in waters where there is a 5 kt. current?  Have you
> ever sailed in a 5 kt. current?  Where?
>
> Bill Effros
>
>
>
> Peter Thorn wrote:
>
> >Hi Mary Lou,
> >
> >It's quite windy and blowing in cold here and could get as low as 28
> >tonight!   My skipper cancelled the NYRA winter series racing at
Blackbeard
> >SC on the Neuse River, so I spent most of the morning messing around with
> >that Anchor Catenary program Ron attached.
> >
> >Using my imagined problem of being stuck out in the Pamlico, out of sight
of
> >land, in 20' of water over a muck bottom, using Raven's storm anchor
(FX11,
> >16' chain, 150' 3/8" three stand nylon all out), and setting the Kellet
at
> >75', here are the results:
> >
> >        Kellet = 0#  =  95.2#
> >        Kellet = 10  = 131.5
> >        Kellet = 20  = 168.0
> >
> >Now it's just a matter of trying to figure out what these results
actually
> >mean.  I'm a builder, not a genius.  My guess is that, with the catenary
> >shape described by the graph shown on the catenary analyzer program,
those
> >are the various horizontal thrust forces holding each particular catenary
> >profile shape in equilibrium against an infinitely strong anchor.  So, a
10#
> >Kellet provides a 38% increase and a 20# Kellet provides a 76% increase
in
> >the force needed to hold each's catenary shape versus no Kellet at all.
If
> >my guess is right, then a Kellet does help quite a bit, adding
significantly
> >to the "shock absorber effect" Rik wrote about.
> >
> >Yes, we use a 10# steel mushroom anchor on 3/8 nylon as a lunch hook.
Works
> >well in any mud bottom and doesn't seem to snag on the stumps in Kerr
Lake
> >the Army Corp of Engineers forgot to grub out before they filled the lake
in
> >the '60s.
> >
> >So... I'm thinking about modifying the 10# mushroom anchor with another
> >quick link (through its nylon rode eye) and a big S hook to ride down the
> >storm anchor rode as a make-shift Kellet.  This capital investment might
be
> >a whopping $5, so there's not much to loose by trying.  A possible
> >enhancement is to melt down some lead tire weights on a Coleman stove
> >outside and pour 2 or 3 cups of hot lead weight into the mushroom bell.
> >Maybe that's too obsessive-- even for me.
> >
> >The big worry is getting caught halfway to Ocracoke in a summer storm.
Out
> >in the middle you lose sight of land for about an hour and there's no
place
> >to hide.  The wind driven waves are short and square.  They come up fast,
so
> >having a method ready to keep the bow to the wind would be very good
indeed.
> >That Boy Scout training never goes away.
> >
> >Late last October at Silver Lake on Ocracoke at 5:30am a local storm hit
our
> >trailer sailor group.  55 Knot winds were reported on WX.  Raven, with
the
> >pop top cover up, heeled 30 degrees against her docklines.  It was gone
in
> >30 minutes, but imagine being out in that!
> >
> >PT
> >
> >
> >
> >
> >
> >
> >
> >----- Original Message ----- 
> >From: "Mary Lou Troy" <mltroy at verizon.net>
> >To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
> >Sent: Saturday, January 14, 2006 11:41 AM
> >Subject: Re: [Rhodes22-list] anchoring obsession
> >
> >
> >
> >
> >>Peter,
> >>My purely theoretical take on this - having never used a kellet, is that
> >>
> >>
> >it
> >
> >
> >>might help - particularly if the winds were not very steady or if there
> >>
> >>
> >was
> >
> >
> >>wave action.
> >>
> >>Have you used the mushroom much as a lunch hook?
> >>
> >>Mary Lou
> >>1991 R22 Fretless
> >>Ft. Washington, PA / Swan Creek, MD
> >>
> >>
> >>
> >>At 04:29 PM 1/13/2006 -0500, you wrote:
> >>
> >>
> >>>GlacierRon, Dave, Bill or anybody:
> >>>
> >>>You have me thinking about anchors and not getting any work done  :)
> >>>
> >>>Suppose I'm out in the Pamlico Sound, with it's mucky bottom in 20' of
> >>>
> >>>
> >water
> >
> >
> >>>and a squall comes up.  Would it help to use the lunch hook, a 10#
steel
> >>>mushroom anchor with a 3/8" nylon rode, as a Kellet  shackled to the
> >>>
> >>>
> >storm
> >
> >
> >>>anchor rode?   The storm anchor is FX11 Fortress with 16' of 1/4" proof
> >>>
> >>>
> >coil
> >
> >
> >>>chain plus 3/8" three strand nylon rode?  Or, could it just make things
> >>>worse?
> >>>
> >>>Any thoughts welcome.
> >>>
> >>>PT
> >>>
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> >>>
> >>>
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> >>
> >
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> >
> >
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