Anchor Chain End Shackle

Anchor Chain End Shackle

The End Shackle, also widely known as an Anchor End Shackle, is a critical load-bearing component in any marine mooring system. Its primary function is to create a secure, reliable connection between the crown shackle of the anchor and the first link of the anchor chain (or a swivel forerunner). The absolute integrity of this single fitting is paramount, as it directly impacts the safety and reliability of the entire anchoring assembly for vessels of all sizes.

An anchor shackle is essential for connecting various types of anchors to their corresponding anchor chains, which may be made of steel or even carbon fiber wire. Our shackles are available in two primary configurations to suit different anchor types and chain dimensions: the straight type and the circular type. Each type is manufactured in a comprehensive range of sizes to ensure a perfect fit and optimal performance.

To meet the diverse and specific requirements of our global customers, we supply both standard shackles from stock and customized shackles engineered to unique specifications. All our products are manufactured in strict compliance with international standards and the rigorous rules of major Classification Societies, ensuring global acceptance and dependable operation.

Technical Specifications (Sample Selection)

Below is a sample of our available sizes and grades. For a complete list and custom requirements, please contact our sales team.

Comprehensive Range of Anchor Chain Fittings

We offer a complete portfolio of high-quality anchor chain fittings to meet all your mooring connection needs:

• Swivel (Anchor Swivel Shackle)

• Joining Shackle (Kenter Joining Shackle)

• End Shackle

• Kenter Shackle

• Anchor Shackle Type D

• Buoy Shackle (Type A & B)

• Pear Shaped Anchor Shackle

• C Shaped Connecting Shackle

• Forelock Shackle

• Swivel Group Assemblies

Product Features & Manufacturing Standards

Frequently Asked Questions (FAQs)

Q1: What is the exact difference between an End Shackle and a Joining Shackle (like a Kenter)?
A: The End Shackle is specifically designed for the terminal connection—between the anchor’s crown shackle and the first chain link. It is a permanent, high-strength fitting for this critical interface. A Joining Shackle (such as a Kenter Shackle) is designed to connect two lengths of chain together, for example, when attaching a new chain section or connecting the chain to the swivel. They serve different purposes in the anchor chain assembly.

Q2: Why are these shackles “drop-forged” rather than cast?
A: Drop forging is a superior manufacturing process for high-stress components. It involves heating the alloy steel and then hammering it into shape under immense pressure within a die. This process refines the grain structure of the steel, aligning it with the shape of the shackle. This results in a component that is significantly stronger, tougher, and more resistant to fatigue and impact than a shackle that is simply cast. This is why drop-forged shackles are the standard for critical marine mooring systems.

Q3: How do I choose between a straight type and a circular type anchor shackle?
A: The choice depends on the design of the anchor’s crown shackle and the type of chain link it needs to connect to. The straight type is a common, versatile design. The circular type (or pear-shaped) is often used where a tighter fit or specific alignment is required, sometimes to accommodate swivels or specific anchor geometries. It’s essential to match the shackle type to the specific components in your mooring system to ensure a proper fit and full load-bearing contact.

Q4: What does “proof load tested” mean for an anchor shackle?
A: Proof load testing is a crucial quality assurance step. During this test, a sample shackle (or in many cases, every shackle for critical applications) is subjected to a load significantly higher than its Working Load Limit (WLL) , typically 2 to 2.5 times greater. The shackle must withstand this force without any permanent deformation or failure. This verifies the integrity of the material, the drop-forged manufacturing, and the heat treatment process.

Q5: When should I choose a Hot-Dip Galvanized (HDG) finish over the standard black paint?
A: The standard black bitumen paint provides a good level of protection for general use. However, for vessels operating in permanently harsh, corrosive saltwater environments, or for equipment expected to have a very long service life, we strongly recommend the Hot-Dip Galvanized (HDG) finish. The HDG process coats the shackle in a layer of zinc, providing sacrificial corrosion protection that significantly outlasts paint, especially in areas subject to abrasion or constant immersion.

Q6: Do you provide certification from classification societies like ABS or DNV?
A: Yes, absolutely. We understand that certified equipment is often mandatory for classed vessels. We can supply our anchor chain fittings with full certification from all major Classification Societies, including ABS, DNV, LRS (Lloyd’s Register), BV, CCS, NK, KR, and RINA. Please specify your required certification when placing your order.

Attention please: The description was copied from different cooperating manufacturers. The description may be different with the goods, please check with us when order.

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