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Basic definition and function of the hook
Edit: Jiangsu Ahn Jin Rubber Co., Ltd.Date: 2018-01-08

The mooring hook is a facility for ship mooring installed in the superstructure of the dock. The mooring hook is generally made of a metal material, and is named because it has a column shape.
The hooks are designed and selected according to the berth capacity and the structure of the wharf to meet the requirements of safe, reliable and convenient operation of the ship's docking, berthing, mooring and turning. The bollard consists of a casing, a bolt, a nut, a washer, an anchor plate, and a core packing. Mooring hook cast iron (HT200) and cast steel (ZG230-450), specification model: 50KN-2000KN

According to the purpose, there are common hooks , storm hooks , and test bollards.
The position of the center of the common hook is generally about 0.5 to 0.8 meters from the front line. It is too close to be easily hit by the ship. It is not safe to operate the cable. Too late, it hinders the loading and unloading of machinery and damages the cable. For armored and ship repair terminals, because the front edge has facilities such as electrical boxes, it is required that the bollard is slightly farther from the leading edge line, about 0.8 to 1.0 meters.
Storm-type ship hooks are used for ship tethers during storms and are usually located behind the pier. Some ports have little chance of suffering from typhoons, or ships that do not shelter from the wind during high winds, so there are no storm bollards; in some ports, in order not to hinder the operation of loading and unloading transport machinery, there is no storm bollard behind the pier. Increase the size of the common mooring hook so that it can be used in high winds.