Closed chock is one form of mooring chock which used to guide the mooring ropes. JIS F-2005 closed chock is made according to marine standard of Japanese standard association. JIS F-2005 is made of cast steel. Its surface is galvanized, polished and painted to be smooth, which can reduce the friction of the rope. 

Specification:

Model Type: JIS F 2005-1975 Closed Chock

Material: Cast Steel

Nominal Size: 100mm-200mm, 250mm - 500mm.

Weight: 3.7kgs - 24kgs, 48kgs -232kgs.

Standard: JIS F 2005-1975

Available Certificate: CCS, DNV, ABS, BV, LR, RS, KR. 

Application:

Marine closed chocks are used for temporary mooring and are used specially for the guidance of rope mooring lines on board a large vessel.

Those fittings are found at the vessel’s bow bulwarks, below the gunwale.

Prevent wear and tear on mooring line

Welded at vessel bow.

Paint printed or galvanized.

Choice will depend primarily on the size of the vessel and the diameter of the lines.

Definition of Offshore

The word Offshore in the Oil and Gas Industry refers to industrial activities in open sea, starting from the search (exploration) of oil and gas to production and transporting them to the shore.

The offshore is part of an industry that actually designs, builds and operates the offshore structures to allow the execution of offshore activities. 

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