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-   -   anyone successful using [3/8"] G40 instead of BBB chain ? (https://www.boatbanter.com/cruising/22505-re-anyone-successful-using-%5B3-8%22%5D-g40-instead-bbb-chain.html)

Courtney Thomas September 8th 04 08:57 PM

anyone successful using [3/8"] G40 instead of BBB chain ?
 
Keith,

I was thinking of using about 125' of 5/16" chain, then at least another
150' of 3/4" 3-strand nylon rope on a CQR, for the primary anchor, then
about 125' of 3/8" G4 chain and the same rope attachment for a Luke
Fisherman storm anchor, and haven't decided about whether to use chain
with the 150' 3/4" 3-strand nylon rodes for a Bruce and a Danforth.

Opinion ?

Cordially,
Courtney


Keith wrote:

I can't answer about the chain, but if you go up a size in Nylon you'll have
two effects. One, it won't be as "stretchy" to absorb shock, and two, you
can't carry as much. If it's too stiff, it can actually yank the anchor out
of the bottom in severe conditions. Of course, it'll always be stretchier
than chain!




--
s/v Mutiny
Rhodes Bounty II
lying Oriental, NC
WDB5619


Keith September 8th 04 11:36 PM

I still think the 3/4" is overkill for the chain you're using. How much does
your boat weigh, or what's the length? I'd stick with whatever Chapman's
recommends for both chain and nylon. Remember you want that stretchiness in
the nylon portion. If you're anchoring out with just chain, you should rig a
nylon snubber for any decent winds/tides.

--


Keith
__
I'd kill for a Nobel Peace Prize.
"Courtney Thomas" wrote in message
...
Keith,

I was thinking of using about 125' of 5/16" chain, then at least another
150' of 3/4" 3-strand nylon rope on a CQR, for the primary anchor, then
about 125' of 3/8" G4 chain and the same rope attachment for a Luke
Fisherman storm anchor, and haven't decided about whether to use chain
with the 150' 3/4" 3-strand nylon rodes for a Bruce and a Danforth.

Opinion ?

Cordially,
Courtney


Keith wrote:

I can't answer about the chain, but if you go up a size in Nylon you'll
have two effects. One, it won't be as "stretchy" to absorb shock, and
two, you can't carry as much. If it's too stiff, it can actually yank the
anchor out of the bottom in severe conditions. Of course, it'll always be
stretchier than chain!




--
s/v Mutiny
Rhodes Bounty II
lying Oriental, NC
WDB5619




Courtney Thomas September 9th 04 02:18 AM

My boat's displacement is 20,000 lbs, unloaded. It's LOA is 41'.

I'm not arguing, but if snubbers are used why must the rode also be
similarly springy ? That is, if 5/8" snubbers are used, why should the
rode necessarily be the same ?

Being ignorant here, it seems to me that if the 5/8" snubbers gave way,
then the 3/4" rode would be a sort of stronger backup.

I should've already clarified my primary motive in all this, which is
storm security. For normal anchoring, I'm not much concerned and would
probably opt for the easiest ground tackle to deploy for the situation
at hand.

Cordially,
Courtney


Keith wrote:

I still think the 3/4" is overkill for the chain you're using. How much does
your boat weigh, or what's the length? I'd stick with whatever Chapman's
recommends for both chain and nylon. Remember you want that stretchiness in
the nylon portion. If you're anchoring out with just chain, you should rig a
nylon snubber for any decent winds/tides.




--
s/v Mutiny
Rhodes Bounty II
lying Oriental, NC
WDB5619


Ryk September 10th 04 06:08 PM

On Wed, 08 Sep 2004 20:18:52 -0500, in message

Courtney Thomas wrote:

My boat's displacement is 20,000 lbs, unloaded. It's LOA is 41'.

I'm not arguing, but if snubbers are used why must the rode also be
similarly springy ? That is, if 5/8" snubbers are used, why should the
rode necessarily be the same ?


The more stretch there is in the whole system, the lower the transient
loads will be because the stretch can absorb energy. A relatively
short length of 5/8 snubber will not stretch nearly as much as a full
length of 5/8 rode.

I should've already clarified my primary motive in all this, which is
storm security.


For that I would concentrate on chafe protection and reducing the
transient loads transmitted to the anchor.

Ryk


Courtney Thomas September 10th 04 11:51 PM

Got it !

Thanks Ryk.

Courtney



Ryk wrote:

On Wed, 08 Sep 2004 20:18:52 -0500, in message

Courtney Thomas wrote:


My boat's displacement is 20,000 lbs, unloaded. It's LOA is 41'.

I'm not arguing, but if snubbers are used why must the rode also be
similarly springy ? That is, if 5/8" snubbers are used, why should the
rode necessarily be the same ?


The more stretch there is in the whole system, the lower the transient
loads will be because the stretch can absorb energy. A relatively
short length of 5/8 snubber will not stretch nearly as much as a full
length of 5/8 rode.


I should've already clarified my primary motive in all this, which is
storm security.


For that I would concentrate on chafe protection and reducing the
transient loads transmitted to the anchor.

Ryk




--
s/v Mutiny
Rhodes Bounty II
lying Oriental, NC
WDB5619



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