KREW2
Well-Known Member
We are advised not to have shackles in our anchor chains. So what is the best way to attatch the chain to an anchor?
Anchor chain
- Thread starter KREW2
- Start date
vyv_cox
Well-Known Member
Not sure how you received that advice. Absolutely no reason not to use a shackle. On the basis of the testing I did, use a stainless steel shackle a size bigger than the chain (e.g. 10 mm for 8 mm chain) Best of all use a Wichard 17/4PH shackle, with a countersunk pin if it tends to catch passing through the roller jaws.
Otherwise, Kong connectors are a good design and plenty strong. In each case the screws should be retained with Loctite thread lock.
Before the corrosion advice arrives, the worst that can happen after sustained exposure to seawater is that the galvanising may go on the final few links of the chain.
Otherwise, Kong connectors are a good design and plenty strong. In each case the screws should be retained with Loctite thread lock.
Before the corrosion advice arrives, the worst that can happen after sustained exposure to seawater is that the galvanising may go on the final few links of the chain.
Phoenix of Hamble
Well-Known Member
That mkaes me happier.... I have a 16mm shackle on 10mm chain... I figure that the anchor will bend before the shackle does!..../forums/images/graemlins/grin.gif
Heigaro
Well-Known Member
[ QUOTE ]
Before the corrosion advice arrives, the worst that can happen after sustained exposure to seawater is that the galvanising may go on the final few links of the chain.
[/ QUOTE ]
It's nothing to worry about, though.
/forums/images/graemlins/ooo.gif /forums/images/graemlins/ooo.gif /forums/images/graemlins/ooo.gif
Before the corrosion advice arrives, the worst that can happen after sustained exposure to seawater is that the galvanising may go on the final few links of the chain.
[/ QUOTE ]
It's nothing to worry about, though.
/forums/images/graemlins/ooo.gif /forums/images/graemlins/ooo.gif /forums/images/graemlins/ooo.gif
roly_voya
Well-Known Member
How did you get a 16mm pin through 10mm chain, normally 12 or sometimes 14mm is the max that will go in?
GMac
Well-Known Member
I was wondering that myself roly, 12mm is usually max.
Glyka
Well-Known Member
They probably meant not to use a shackle to join two pieces of chain as in that case you would need a shackle of a smaller size (9mm for a 10mm chain).
Salty John
Well-Known Member
If you use a bow shackle rather than a 'D' shackle the pin won't catch the bow roller cheeks so readily.
I use a cable tie to 'mouse' the shackle pin but many recommend the traditional wire method. Loctite sounds a good idea.
I use a cable tie to 'mouse' the shackle pin but many recommend the traditional wire method. Loctite sounds a good idea.
KREW2
Well-Known Member
[ QUOTE ]
Not sure how you received that advice
[/ QUOTE ]
The first 10mtrs of my anchor chain is 10ml, it then is shackled to 20mtrs of 8ml chain, which in turn is shackled to a 20mtr length of nylon rope. I was given the impression that this system may have too many shackles, but as you need to use one for the anchor connection does another one make much difference?
Not sure how you received that advice
[/ QUOTE ]
The first 10mtrs of my anchor chain is 10ml, it then is shackled to 20mtrs of 8ml chain, which in turn is shackled to a 20mtr length of nylon rope. I was given the impression that this system may have too many shackles, but as you need to use one for the anchor connection does another one make much difference?
KREW2
Well-Known Member
How often, as a general rule should you change your anchor chain? Mine is five years old to my knowledge, are you saying that the chain in your picture is still serviceable? mine has a few rusty links but it is not as bad as the one shown.
Athene V30
Well-Known Member
I wish my anchor chain was that rusty but it is worse! Time to replace me thinks!
VicS
Well-Known Member
[ QUOTE ]
How often, as a general rule should you change your anchor chain?
[/ QUOTE ] Mine is 30 years old!
How often, as a general rule should you change your anchor chain?
[/ QUOTE ] Mine is 30 years old!
VicS
Well-Known Member
My anchor chain has a large link at the ends, that enables me to fit a larger size of shackle than the chain size. I though that if chains were supplied as anchor chains that was normal.
charles_reed
Well-Known Member
Then you swap
end for end - decent hot-dip galvanising gives one about 10 seasons' use (about 120 anchorings/season).
It is essential to have oversize links each end, or the shackle becomes the weakest point in the system.
end for end - decent hot-dip galvanising gives one about 10 seasons' use (about 120 anchorings/season).
It is essential to have oversize links each end, or the shackle becomes the weakest point in the system.
GMac
Well-Known Member
Re: Then you swap
Only change when it's rusty beyond repair or you change size for whatever reason.
Otherwise the only other things to keep in mind are -
When it's been regalved for the 3rd or 4th time. Remember to test it after, not just a bit, the whole length. Just checking it's not lost too much strength. It maybe fine but equally it maybe spooky.
A real good look over after a real big blow. Look for stretch and any signs of de-formed links especially the area that was by the bow roller. If you find anything get the chain retested.
Galvanising can last from 6 months to many years, all depends on how often, where you use it and how you look after it.
Only change when it's rusty beyond repair or you change size for whatever reason.
Otherwise the only other things to keep in mind are -
When it's been regalved for the 3rd or 4th time. Remember to test it after, not just a bit, the whole length. Just checking it's not lost too much strength. It maybe fine but equally it maybe spooky.
A real good look over after a real big blow. Look for stretch and any signs of de-formed links especially the area that was by the bow roller. If you find anything get the chain retested.
Galvanising can last from 6 months to many years, all depends on how often, where you use it and how you look after it.
geoffatstanpit
Well-Known Member
I don't know how long it had been down there but I found a lump of chain a bit like your pic where I was proposing to lay my mooring. A bit of treatment with a hammer revealed this
Surprisingly the shackle still works and the thread is relatively untouched!
You are the weakest link!
Surprisingly the shackle still works and the thread is relatively untouched!
You are the weakest link!
vyv_cox
Well-Known Member
That's a nice one! Here's mine.
Picked up at Pollensa, Mallorca. The bay is virtually non-tidal. There are many vacant moorings around the head of the bay, with a wide variety of buoys attached. Over a period of time the chain at the bottom of the riser wears on the seabed, creating a weed-free circle beneath. Inspecting the chain at the buoy shows it to be in good condition, but diving on it shows many to be worn dangerously at the seabed.
This one was picked up by a small speedboat and left on it overnight. Wind picked up and next morning the boat was gone!
Picked up at Pollensa, Mallorca. The bay is virtually non-tidal. There are many vacant moorings around the head of the bay, with a wide variety of buoys attached. Over a period of time the chain at the bottom of the riser wears on the seabed, creating a weed-free circle beneath. Inspecting the chain at the buoy shows it to be in good condition, but diving on it shows many to be worn dangerously at the seabed.
This one was picked up by a small speedboat and left on it overnight. Wind picked up and next morning the boat was gone!
