Anchor Shackle

[Pauls]

Use the Crosby high strength alloy shackles. You will find that Crosby rates these very conservatively, the minimum breaking strength is 5 times the WLL. If you use the largest size shackle that will fit your G40 chain the shackle breaking strength will equal/exceed the breaking strength of the chain.

[noelex 77]

There is a good general article on anchor shackles here:

http://mantusanchors.com/wp-content/...e-document.pdf

And a good article on practical tests conducted on shackles here:

Connectors

[Cheechako]

Originally Posted by Acadia

Thanks for the great replies, I think I will go with alloy steel.

I tried getting a bigger shackle than 5/16th on there but with no luck.

Happy Holidays

a 3/8 shackle should fit your 5/16 HT chain. I have also used SS high quality forged shackles rated at far higher than the chain. (Wichard) as mentioned just keep track of any rust ocurring. I really cant say rust occurred on the first few links any faster with the SS shackle than the other way. Either way, easy to remove a few links every year or so

[Hudson Force]

I'm pleased with my experineces using the Crosby shackles on my 5/16"Amer-Hi-Test not only at the anchor, but at locations where I join shots of chain with two Crosby shackles along the length of my rode.

[Cotemar]

Originally Posted by Acadia

Hello,

I've been searching posts trying to figure out what kind of shackle I should put between my anchor and chain.

Although this might seem like an easy answer for most, there is one thing that makes me scratch my head a little.

So if the anchoring system is only as strong as it's weakest link, I'm having a hard time finding a shackle that will match the specifications of the chain.

The chain is 5/16 HT, the anchor is a Mason supreme 45lbs and the boat is 18,000lbs

I've been looking at the Crosby shackles rated at 3/4t. Now I figure that it's probably more than enough but the working load of the chain is more than double that (if I'm not mistaken) so is there an alternative?

Also, I've see a few opinions out there about using SS shackles. Should I stay away from them?

Is there a specific difference with an anchor shackle VS a regular shackle?

Thanks

Maybe this will help.

http://www.cruisersforum.com/forums/...ml#post1174022

[noelex 77]

I have done the same thing and it is a great solution it makes the shackle quite smooth so it does not catch on anything. The super strong "A" shackle may or may not be needed depending on your chain strength (g7, g4, or g3) and if you have a larger end link, but it is cheap insurance even if its overkill.
I would always use a quality shackle the rated lifting shackles at least provide some reassurance of quality control

Special flush shackles are available, but are difficult to source especially in the stronger designs and usually cannot be moused. (Although you can use locktight)

[Therapy]

Originally Posted by Jmolan

We stopped using shackles over ten years ago in the trawling industry in Alaska.

We use what we call a "hammerlock" It runs about 3 times the strength of a shackle for the same size.
I have had a heck of a time this morning trying to find some examples on line. Here are the two I came up with.

Läs publikation

Page not found | Unicorn Stainless

If you are on either coast check with a comerical fishing outfit.

The Gunnebo is what we use. The highlandrigging does not give a very good presentation. Crosby and Campbell chain also make hammerlocks. On Gunnebo they call them "Coupling Link G'

It always baffled me how you had all this high strength chain and anchor and then use a shacle that is so much lower in working load.

First link I did not see anything called "hammerlock". Second link was 404 error.
??

[Tantalus]

http://www.unicornstainless.com/prod...mmerlock-link/

[Therapy]

Originally Posted by Tantalus

Hammerlock Link | Unicorn Stainless

Thanks.

I thought that was probably it. Strange looking bugga.

[Stu Jackson]

Nigel Calder's Cruisers Handbook has a great section on anchor shackles. IIRC, most folks put the anchor through the pin and the chain on the rounded end of the shackle.

Please correct me if I'm wrong, haven't had a chance to go look it up. Yet...

[Therapy]

Originally Posted by Stu Jackson

Nigel Calder's Cruisers Handbook has a great section on anchor shackles. IIRC, most folks put the anchor through the pin and the chain on the rounded end of the shackle.

Please correct me if I'm wrong, haven't had a chance to go look it up. Yet...

You would have a pretty small shackle that way.