The size of a Swivel Shackle type B is adapted to fit the size of it's corresponding ship chain. The smaller ones begin with a diameter of 22 mm up to 62 mm, and are the most commonly used ones in fishing boats. For medium sized ships, such as ferries, the diameter of the Swivel Shackle type B begins at 64 mm until 84 mm. There exists also larger ones, for cargo ships and Offshore Service Vessels, starting at a diameter of 64 and up to 117 mm.