What is used to attach the chain so that the anchor line can spin freely?

What is used to attach the chain so that the anchor line can spin freely?

• A. Thimble
• B. Shackle
• C. Nut
• D. Swivel

Answer: (D)

To prevent the anchor line from twisting as the boat swings, you need a device that lets two parts rotate independently. A swivel does that: it connects the chain to the anchor line with bearings inside so the line can spin freely while the chain holds the weight. This rotation prevents the rope from kinking, tangling, or wearing unevenly as wind, tide, and boat movement shift the rode. The chain is usually attached to one end of the swivel with a shackle, while the other end connects to the line. A thimble protects the line at its connection, but it doesn’t allow rotation; a nut simply fastens parts together without enabling rotation. Only the swivel provides the needed free rotation between chain and line.

To prevent the anchor line from twisting as the boat swings, you need a device that lets two parts rotate independently. A swivel does that: it connects the chain to the anchor line with bearings inside so the line can spin freely while the chain holds the weight. This rotation prevents the rope from kinking, tangling, or wearing unevenly as wind, tide, and boat movement shift the rode. The chain is usually attached to one end of the swivel with a shackle, while the other end connects to the line. A thimble protects the line at its connection, but it doesn’t allow rotation; a nut simply fastens parts together without enabling rotation. Only the swivel provides the needed free rotation between chain and line.