Anchor swivel shackle is a joining link that is connected with the anchor and chain cable, which has both the functions of swivel and shackle. Swivel shackle has two types: type a and type b. Both types of swivel shackles are applicable to grade 2 and grade 3 anchor chains. It can be from forged steel or cast steel. Type a swivel shackle can join directly the anchor shank. It is not suitable for the connection with anchor shackle. Type b swivel shackle can be directly connected with the anchor shackle and also accessible to be connected with anchor shank.