T&T: Anchors [slightly longer than Very Short]

[Jim Boyd]

Is there a recommended length for a snubber on an all chain rode?



-----Original Message-----
From: trawlers-and-trawlering-bounces at lists.samurai.com
[mailto:trawlers-and-trawlering-bounces at lists.samurai.com] On Behalf Of
Faure, Marin
Sent: Friday, April 24, 2009 6:53 PM
To: trawlers-and-trawlering at lists.samurai.com
Subject: Re: T&T: Anchors [slightly longer than Very Short]

>As I understand, the weight of the chain helps in two ways: (1) it adds
weight at the anchor end causing the rode to leave the anchor at a lower
angle than rope alone would, and (2) when the wind shifts, the chains
slows down the process of the shank being rotated to point in another
direction.


Both true.  The chain is also immune to abrasion if the bottom is sharp
rocks, coral, etc.  The advantage of an all-chain rode is the high
weight of the entire rode, which helps keep the angle of pull lower.
The catenary in the rode provides the shock absorbing.  The downside of
all-chain is that it has zero elasticity, so if the wind blows hard
enough to take all the catenary out of the chain, the shocks from the
surge of the boat are transferred in full to the boat hardware holding
the chain.  This total lack of elasticity is why nylon snubbers should
always be used with an all-chain rode.


______________________________
C. Marin Faure
GB36-403 "La Perouse"
Bellingham, Washington
_______________________________________________
http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering

To unsubscribe or modify your subscription options (get password, change
email address, etc) go to:
http://lists.samurai.com/mailman/options/trawlers-and-trawlering

Trawlers & Trawlering and T&T are trademarks of Water World
Productions. Unauthorized use is prohibited.