Anchor shackles are a type of marine rigging primarily used to connect anchor chains and sledgehammers. They are characterized by their small size and high load-bearing capacity. They can be classified by type (G209 (BW), G210 (DW), G2130 (BX), G2150 (DX); by shape (straight and round); by pin type (threaded pin shackles and smooth pin shackles); by type (arch-shaped shackle with nut (Omega shape) and D-shaped shackle with nut (U-shaped/straight); and by application (marine and land-based).
They are typically made of alloy steel or Q235, CM490, etc., and surface treatments include black paint, galvanizing, and natural finish. They conform to standards such as GB/T 547-1994 and DIN82101 and are certified by classification societies such as CCS, ABS, and DNV. The anchor shackle design must ensure that the horizontal pin is installed facing upwards, secured with a beveled pin and sealed with lead to prevent detachment. Calcium-based grease should be applied before installation to prevent rust. Overloading should be avoided during use. Regularly inspect the horizontal pin for wear, rust, and deformation. For D-type shackles, special attention should be paid to the locking device pin; spot welding or lead sealing may be necessary. Ship-specific models can conceal the protruding horizontal pin components to ensure smooth passage through anchoring equipment.
