Rope shackles are a lightweight, metal replacement for traditional shackles — Robline's range includes rope shackles in two load classes, 1000 kg in black and 1700 kg in anthracite. The rope shackle is made of tightly braided, wear-resistant rope, which is knotted or pressed into a loop and works on the same principle as a metal D-shackle, but is considerably lighter.
The biggest advantage of a rope shackle over a metal shackle is its weight and the fact that it cannot scratch the boat, sails or other components when it hits them in high winds — making it a popular choice, especially in racing, where every extra gram high up in the rigging affects the boat’s balance and performance. A rope shackle also cannot rust or get stuck in the lock in the same way that a metal locking mechanism can.
The choice of load class (1000 kg or 1700 kg) is made according to the load of the application — the lighter 1000 kg model is sufficient for most smaller sails and equipment attachments, while the 1700 kg model is more suitable for larger sails or attachments that can withstand higher loads. The color (black or anthracite) is a purely aesthetic choice.
The quality of the knot or compression joint of a rope shackle determines its actual durability — a carelessly made loop can slip open under heavy load, so a professionally made, compressed loop is always more reliable than a self-tied alternative for the same purpose. The durability class of Robline rope shackles (1000 kg or 1700 kg) indicates the maximum load, but for practical safety reasons, the actual working load should be kept well below this, especially in dynamic, jerky load situations such as waves. The advantage of a rope shackle over a metal one is especially emphasized in places where the shackle can hit the sail, other ropes or the surface of the boat in high winds — a light rope does not pose the same risk of scratching or tearing as a hard metal shackle. Regular inspection for wear and UV damage is important, as unlike stainless steel, rope material gradually deteriorates due to sunlight and mechanical wear, and damage is not always easily visible to the naked eye.
It is advisable to regularly visually inspect the compression connection of the rope shackle, as repeated loading and UV exposure can weaken the strength of the connection over time.
The correct durability class of the rope shackle and regular inspection ensure safe use throughout the sailing season.
Proper use and regular maintenance of the shackle ensure safe and reliable fastening every time you sail.
