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Paul L
 
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Uhm, maybe for your boat. In fact, just last weekend I was anchored
out in 30 gusting 45 and neither chain+rope rode was bar-taut.

The point still holds, in heavy weather conditions, when things are at their
worst, an all chain rode or a chain/rope rode will be stretched taut and a
kettle will do no good.

Paul
"Amgine" wrote in message
om...
"Jim Donohue" wrote in message
news:X2Uid.82404$bk1.80735@fed1read05...
The problems is
that above 35 knots of wind or so you have a straight rode.


Uhm, maybe for your boat. In fact, just last weekend I was anchored
out in 30 gusting 45 and neither chain+rope rode was bar-taut. On the
other hand, I was wishing I had a bit more chain on both because I
didn't have quite enough out for the weather (7:1 on a 7.5kg Bruce,
and 5:1 on a 25lb. CQR) as I'd anchored 8 hours before the peak of the
blow.

To get a reasonable amount of shock absorption with all-chain, use a
chain hook on about 30-40' of light nylon laid line and veer out a few
more feet of chain. You'll get all the spring you want, but if there's
much fetch you don't want too slack a chain to save your bows from a
beating.

I've never used either a kellet or buoy, but I'd like to experiment
with both. Who has used which?

Amgine
http://wiki.saewyc.net/



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Jim Donohue
 
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"Amgine" wrote in message
om...
"Jim Donohue" wrote in message
news:X2Uid.82404$bk1.80735@fed1read05...
The problems is
that above 35 knots of wind or so you have a straight rode.


Uhm, maybe for your boat. In fact, just last weekend I was anchored
out in 30 gusting 45 and neither chain+rope rode was bar-taut. On the
other hand, I was wishing I had a bit more chain on both because I
didn't have quite enough out for the weather (7:1 on a 7.5kg Bruce,
and 5:1 on a 25lb. CQR) as I'd anchored 8 hours before the peak of the
blow.

To get a reasonable amount of shock absorption with all-chain, use a
chain hook on about 30-40' of light nylon laid line and veer out a few
more feet of chain. You'll get all the spring you want, but if there's
much fetch you don't want too slack a chain to save your bows from a
beating.

I've never used either a kellet or buoy, but I'd like to experiment
with both. Who has used which?

Amgine
http://wiki.saewyc.net/


See Complete Book of Anchoring and Mooring by Hinz page 113. On the ABYC
hypothetical power boat of 45 feet and 15 foot beam the cantenary has 1 foot
of "droop"per 100 feet of rode at 30 knots and 0 feet at 40 knots. If your
boat is smaller and has a smaller section it may be a little higher.

Hinz advocates the use of chain riding stoppers for all chain boats. He
points out that all chain rodes are very good at parting or destroying
something in high winds. They are also sufficiently noisey in high wind
conditions to make sleep difficult.

Jim Donohue


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Jeff Morris
 
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Even more important than the "droop" is the limited (almost non-existent) extension
available to an all chain system. What its really needed is enough nylon to allow for
5 or 10 feet, or more, of stretch.



"Jim Donohue" wrote in message
news:rUtjd.90348$bk1.52418@fed1read05...

"Amgine" wrote in message
om...
"Jim Donohue" wrote in message
news:X2Uid.82404$bk1.80735@fed1read05...
The problems is
that above 35 knots of wind or so you have a straight rode.


Uhm, maybe for your boat. In fact, just last weekend I was anchored
out in 30 gusting 45 and neither chain+rope rode was bar-taut. On the
other hand, I was wishing I had a bit more chain on both because I
didn't have quite enough out for the weather (7:1 on a 7.5kg Bruce,
and 5:1 on a 25lb. CQR) as I'd anchored 8 hours before the peak of the
blow.

To get a reasonable amount of shock absorption with all-chain, use a
chain hook on about 30-40' of light nylon laid line and veer out a few
more feet of chain. You'll get all the spring you want, but if there's
much fetch you don't want too slack a chain to save your bows from a
beating.

I've never used either a kellet or buoy, but I'd like to experiment
with both. Who has used which?

Amgine
http://wiki.saewyc.net/


See Complete Book of Anchoring and Mooring by Hinz page 113. On the ABYC
hypothetical power boat of 45 feet and 15 foot beam the cantenary has 1 foot of
"droop"per 100 feet of rode at 30 knots and 0 feet at 40 knots. If your boat is
smaller and has a smaller section it may be a little higher.

Hinz advocates the use of chain riding stoppers for all chain boats. He points out
that all chain rodes are very good at parting or destroying something in high winds.
They are also sufficiently noisey in high wind conditions to make sleep difficult.

Jim Donohue



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Amgine
 
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"Jeff Morris" wrote in message ...
Even more important than the "droop" is the limited (almost non-existent) extension
available to an all chain system. What its really needed is enough nylon to allow for
5 or 10 feet, or more, of stretch.



See Complete Book of Anchoring and Mooring by Hinz page 113. On the ABYC
hypothetical power boat of 45 feet and 15 foot beam the cantenary has 1 foot of
"droop"per 100 feet of rode at 30 knots and 0 feet at 40 knots. If your boat is
smaller and has a smaller section it may be a little higher.

Hinz advocates the use of chain riding stoppers for all chain boats. He points out
that all chain rodes are very good at parting or destroying something in high winds.
They are also sufficiently noisey in high wind conditions to make sleep difficult.

Jim Donohue


I will look for the Hinz book. I can attest to the noise, though only
rarely is it enough to keep me up (the waves and wind, on the other
hand, keep me hopping on a breezy night.)

IMO, from my experience using a *long* snubber of 30-40 foot of small
nylon, a chain rode can be made quite springy. The only problem I had
was pitching to a single anchor when I had too much slack in the
chain. After listening to it beat up the bow for a couple minutes I
hauled in most of the slack and things were great for the rest of the
night, but the damage to gelcoat was already done and resulted in
painting the entire topsides.

Something I haven't tried, but a fellow club member does, is using an
unusually small diameter line and a longer than usual scope. I have
watched him anchor in a fairly open range with what I consider to be a
grossly inadequate anchor on 3/8 nylon at about 8:1, with no problems.
He claims the smaller diameter has a high enough breaking strength for
the job, but is stretchier in the gusts/waves and thus both gentler to
ride to and lower jerk loads to break the anchor out.

Has anyone had any first-hand experience with Kellets or Buoys?

Amgine
http://wiki.saewyc.net/
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JAXAshby
 
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ten foot of stretch on standard twisted nylon is about 150' to 250' of nylon,
except under line breaking conditions.

From: "Jeff Morris"
Date: 11/7/2004 4:55 PM Eastern Standard Time
Message-id:

Even more important than the "droop" is the limited (almost non-existent)
extension
available to an all chain system. What its really needed is enough nylon to
allow for
5 or 10 feet, or more, of stretch.



"Jim Donohue" wrote in message
news:rUtjd.90348$bk1.52418@fed1read05...

"Amgine" wrote in message
om...
"Jim Donohue" wrote in message
news:X2Uid.82404$bk1.80735@fed1read05...
The problems is
that above 35 knots of wind or so you have a straight rode.

Uhm, maybe for your boat. In fact, just last weekend I was anchored
out in 30 gusting 45 and neither chain+rope rode was bar-taut. On the
other hand, I was wishing I had a bit more chain on both because I
didn't have quite enough out for the weather (7:1 on a 7.5kg Bruce,
and 5:1 on a 25lb. CQR) as I'd anchored 8 hours before the peak of the
blow.

To get a reasonable amount of shock absorption with all-chain, use a
chain hook on about 30-40' of light nylon laid line and veer out a few
more feet of chain. You'll get all the spring you want, but if there's
much fetch you don't want too slack a chain to save your bows from a
beating.

I've never used either a kellet or buoy, but I'd like to experiment
with both. Who has used which?

Amgine
http://wiki.saewyc.net/

See Complete Book of Anchoring and Mooring by Hinz page 113. On the ABYC
hypothetical power boat of 45 feet and 15 foot beam the cantenary has 1

foot of
"droop"per 100 feet of rode at 30 knots and 0 feet at 40 knots. If your

boat is
smaller and has a smaller section it may be a little higher.

Hinz advocates the use of chain riding stoppers for all chain boats. He

points out
that all chain rodes are very good at parting or destroying something in

high winds.
They are also sufficiently noisey in high wind conditions to make sleep

difficult.

Jim Donohue













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JAXAshby
 
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To get a reasonable amount of shock absorption with all-chain, use a
chain hook on about 30-40' ...


doesn't give all that much shock attenuation. much better is double triple
that amount of nylon. specs of rope manufactureres give nylon stretch at least
than about 4% (many writers/posters who didn't bother read the spec sheets talk
of 15% to 25% stretch, but the line won't go that except sometimes under
breaking conditions), except for special mountain climbing ropes and "plait".

... of light nylon laid line and veer out a few
more feet of chain.



  #7   Report Post  
JAXAshby
 
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Actually neither the ball no the kellet has any effect in extreme
conditions.


I have seen mooring balls work just fine in upwards of sustained storm force
winds.

HEAVY kellets (25# each, and often two or three on a rode) are sometimes used
to overcome the inherent dangers of an all chain rode, at least up to 35+ knots
of wind, then chain and nylon is used.
  #9   Report Post  
Paul L
 
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"Wayne.B" wrote in message
...
....
How many kellets, and how much nylon rode, do they use on a
supertanker? Or the QE2?

They don't turn their engines off in a blow either.

Paul


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