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Please note that Jimmy Green Marine do not recommend joining chain where the connection is load critical or a matter...
Please note that Jimmy Green Marine do not recommend joining chain where the connection is load critical or a matter of safety.
The methods used for joining chain depend on whether the connection needs to pass through a windlass gypsy.
Where calibration is not an issue, two tested shackles fitted back to back i.e. linked shackles with the pin through the end link of each chain will ensure a joint which is as strong as the chain.
Shackle pins should be nipped up tight with leverage for peace of mind. It is advisable to use a thread locking agent e.g. LocTite and/or monel seizing wire to ensure that the pin can’t work loose.
Quick links can also be used in this situation. Rated quick links are as strong as the chain. LocTite should be applied to the thread and the hex head nut tightened with a spanner to keep it secure.
Joining two lengths of calibrated chain to form a longer rode that will need to pass through a windlass gypsy is a different proposition.
The connector will need to be very similar in shape and dimensions to the calibrated chain in order to pass successfully through the gypsy.
C links are generally used for this purpose.
C Links are made from two separate pieces that fit together to form a shape very similar to an anchor chain link.
The two parts have rivets that need to be peened over to secure the link.
Link the two parts through the ends of your chain and hammer the rivet ends over so that the two halves are securely fastened together.
If you are in any doubt about the results of your peening, it is advisable to start again or get the two parts welded as insurance.
N.B. Welding on a galvanised link will require a coating treatment and regular monitoring for any signs of rust.
C Links are available in Galvanised and Stainless Steel.
Jimmy Green Marine offer a rated C Link solution in galvanised finish manufactured by Crosby and two types of unrated stainless steel C Link.
The Osculati C Link has 4 rivets rather than the standard two.
If you elect to use a stainless steel link with galvanised chain, the metallurgic reaction will eventually lead to a deterioration in the chain.
It is advisable to check the connection regularly.
It is very important to cut off any rusting links and repeat the job rather than let the deterioration continue.