Ship Anchor Chain

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A heavy chain used for holding a vessel at anchor. The total length of chain is to be divided in approximately equal parts between the two bower anchors. The inboard ends of the chain cables are to be secured to the ship’s structure by means which enable, in case of emergency, an easy slipping of the chain cables to sea. Ship Anchor chain and chain accessories are to be produced by manufacturers approved by classification society. All chain is to have a workmanlike finish and be free from injurious defects. There is to be an odd number of links in each shot of anchor chain cable to insure shackles leading over the windlass are in the same position.
The steel used for the manufacture of chain is to be made by the open-hearth, basic-oxygen, electric-furnace or such other process as may be specially approved.
Rimmed steel is not acceptable for any grade of chain.
For approval purposes, the manufacturer is to submit a manufacturing procedure specification, applicable material grades, and dimensional details of chain/accessories along with a test plan for classification society review. The approval tests, as a minimum, are to include: chemical analyses, proof and break load tests, tensile/impact tests, metallographic examinations, dimensional measurements, visual and non-destructive examinations. The approval tests are to be witnessed by an attending Surveyor and the test-data are to be submitted to classification society for review and acceptance. The approval is valid for a maximum of 5 years and the renewal process is to be on similar lines.
Locking pins in detachable connecting links are to have taper contact at both top and bottom in the link halves. Lead or other acceptable material is to be used for plugging the locking pin hole which is to contain an appropriate undercut recess or equivalent arrangement to secure the plug.
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