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The closed chock is made according to the JIS F 2005-1975 standard of the Japanese Standard Association. The JIS F 2005 closed chock is one of the commonest mooring closed chocks used on vessels. The marine chocks are used for temporary mooring to guide rope from inboard to outboard a large vessel and applied at the vessel’s bow bulwarks to prevent wear and tear of the mooring line. The nominal size of 100mm to 200mm closed chocks are made of common cast steel and there are four stiffeners around the chock. The nominal size of 250mm to 500mm closed chocks are made of cast steel according to the requirement of standard JIS G 5101, and there are five stiffeners around the chock. The surface should be polished, galvanized and painted smoothly without any visual flaws, edges and burrs, which can reduce the friction of the mooring and towing ropes. The chocks can be supplied with foundation, which can be designed and manufactured according to the requirement on the vessel. The chocks are welded at a bow ship. We provide high quality closed chocks with the certificate of CCS, BV, ABS, etc.
The marine chock is an important mooring equipment. There’re different types of mooring chocks with different standards including ISO, JIS, DIN, NS. SWL will be from 8KN to 3000KN according to your requirements. In the process of mooring ship, it bears huge loads. Usually, the ship bollards and mooring chock are for the whole ship mooring use. The general bow and stern of ship block the bollard fairlead, quantity large. Of intermediate section above without or bollards, fairlead rarely. Fairlead is oblique chock more insurance, because it is closed, the cable will not jump out. The triangle chocks are widely used for small boats and different vessels, such as container vessels, tankers, bulk carriers, tug, dry cargo vessels, etc.
Marine mooring chock has two types: deck mounted chock & bulwark mounted chock. The material is casting steel ZG230-450 normally. IACS approved quality to withstand all conditions. Certificated by BV, ABS, LRS, DNVGL, RS, IRS, CCS, KR, NK, etc. We could also provide you with a customized design with CAD drawings.
|JIS F 2005-1975 Closed Chock|