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JAXAshby
 
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2) It serves as a shock absorber, helping to absorb the boat's movement due
to the wave action.


you obviously do not understand the mathematics of catenaries. NOBODY chains a
boat to a dock, or a rock on shore.

It doesn't take much of a wind to pull chain tight enough to be considered zero
point zero zero zero zero zero three seven three of a shocker absorber.
  #43   Report Post  
Don White
 
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"NOYB" wrote in message
...



1) It decreases the pulling angle on the anchor relative to the bottom,

thus
improving the the ability of the anchor to *bite* the bottom better.

2) It serves as a shock absorber, helping to absorb the boat's movement

due
to the wave action.

3) It provides abrasion resistance against sharp bottom structure.

4) It helps the anchor drop straight down, rather than "sailing" when
there's a strong current.


Good answer NOYB! What are you doing up here...spying for Jeb?


  #45   Report Post  
Don
 
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Two fold

To stop abrasion on the bottom

In a good blow the added weight of the chain keeps the anchor pulling
horizontally and therefore digs deeper as opposed to being pulled up at
a 45' angle

djb wrote:

great question!!
d
"Ivan Yonge" wrote in message
ble.rogers.com...

My friend told me to use Anchor chain to attach between the anchor and the
rope.. what is the reason? I was trying to search on Internet but


couldn't

find a good explanation. Can anyone tell me why please? thanks

I.Y








  #46   Report Post  
NOYB
 
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"JAXAshby" wrote in message
...
2) It serves as a shock absorber, helping to absorb the boat's movement

due
to the wave action.


you obviously do not understand the mathematics of catenaries. NOBODY

chains a
boat to a dock, or a rock on shore.


In a light wind, the chain is lying flat along the bottom. If a large wave
came along, the boat would have to tug the chain off the bottom. You get a
damping effect when you lift the chain from the bottom and remove the slack
from the line. You go from a parabolic shape in the rope and rode, to a
straight line shape. In order to do that, a lot of energy is expended.
Thus, the rode as as a shock absorber. Get it?



  #49   Report Post  
Bilgeman
 
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labomba states:

-In a "good blow", the small amount of chain used in most chain and rode
setups is not going to keep the rode at a shallower angle. -

Bilge- I'm not a deck-ape, mind, but I've sure been on the forepeak enough
during anchoring operations.

You also have to consider how big a circle you're allotted, swinging around
and fetching up against someone else's ship is considered bad form.

Most Captains I've sailed with pay out however many shots required to radius
their circle, and then have the bosun set the brake, then they back down slow
astern to "set" the anchor.

After the deckies set the devil's claw, the "hang" of the chain is checked
regularly by the mate on watch. Especially after the Sea-Land Express dragged
her anchor and grounded off Capetown last year.

Cheers;


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