Chocks Suppliers

A chock is a deck fitting that guides a mooring rope or anchor chain from the windlass or bollard out through the ship's side, and takes the load when the line pulls. The fitting may look simple, but a cracked weld or a worn lip can cut through synthetic rope under tension and put the crew on deck in danger. 

Class rules set strict limits on size, material, and Safe Working Load. Chocks suppliers serve owners, technical superintendents, and shipyards with castings, forgings, and fabricated units that match the vessel's mooring arrangement plan. RecordsMarine is a directory that connects fleets with vendors active at the right ports.

Common Chock Types

The shape and use vary by vessel and deck position. Reliable suppliers hold:

• Panama chocks per IACS UR A1 for SOLAS vessels
• Closed (oval) chocks for general mooring duty
• Open (roller) chocks at bow and stern stations
• Universal fairleads with rollers
• Anchor chocks and stoppers
• Bow chocks for towing and emergency tug lines

Materials run from cast steel and ductile cast iron to forged alloy steel. Surface finish covers hot dip galvanized, painted, or bare for yard coating.

Where Chocks Are Used

Tankers, bulk carriers, container ships, and offshore units fit Panama chocks at every mooring station, sized to the ship's mooring lines and the maximum break load of the rope or wire. 

Bow chocks take towing forces during port arrival and emergency tow. 

Anchor chocks hold the anchor flush against the hull during sea passage. Smaller workboats, tugs, and barges use lighter open chocks for working ropes, while offshore supply vessels add heavier units to handle anchor handling and tow lines.

Standards and Approvals

A serious chock supplier delivers a product certified to known codes. Panama chocks meet IACS UR A1 with the marked Safe Working Load. General deck fittings follow ISO 13713, ISO 13729, and ISO 13795 by type. Class type approval from DNV, ABS, Lloyd's Register, Bureau Veritas, RINA, NK, KR, or CCS is normal. 

Each delivery should include the material certificate (EN 10204 3.1 or 3.2), the proof load test report, and a body marking with SWL, weight, and heat number.

How to Choose the Right Chocks Supplier

A poor casting fails at the worst moment. Key points to review:

• Type approvals matched to the ship's class society
• Material traceability and 3.1 or 3.2 certificates
• Proof load test records with each unit
• Casting and forging quality control records
• Lead times for non-stock sizes
• Surface finish options against the yard schedule

A reference call with a buyer who fitted the same model 12 to 24 months ago often reveals weld and casting issues that come up only after service.

Maintenance and Common Failures

Chocks fail mostly at the lip and at the base weld. Heavy mooring pulls in tight ports wear a groove that cuts rope on the next call. Crews watch for sharp edges, cracks at the foot, and corrosion on galvanized parts.

A planned grind and weld repair during dry dock restores the rope-bearing surface. Any chock with a section loss above class limits comes off the deck for full replacement.

Frequently Asked Questions

How fast can a supplier of chocks deliver chocks to a yard?

Stock sizes often reach major yards in 2 to 4 weeks. Custom castings and full sets for newbuilds need 8 to 16 weeks of factory production.

What documents should a supplier provide?

Type approval, mill certificate, proof load test report, and a body mark that matches the paperwork.

Can one supplier cover the full mooring fitting set?

Yes, larger distributors hold bollards, fairleads, and roller chocks alongside, often as a full deck package for newbuilds.

Do suppliers offer matched Safe Working Load packages?

Most do. The mooring arrangement plan drives the SWL choice, and a good vendor checks the plan before quoting.

Find a Chocks Supplier Near You

Browse the directory below to find vendors active at major shipyards and supply hubs. Each profile holds the brand list, approvals on file, and a contact line that goes straight to the sales desk.