X21
Extra Line Double Braid Mooring LineProduct: X21
Structure: Double Braided
(Core/Cover): Nylon / Polyester
Standard: ISO 2307:2019
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The rope is composed of a wear-resistant polyester rope cover and a super-strong nylon rope core. The specific double braid construction design delivers maximum strength. The cover of the rope is made of polyester fiber material with excellent wear-resistance, combined with a specialized twisting process to maximize wear-resistance. Designed with a round, robust profile, the rope offers effortless handling and reduced risk of winding or knotting. Compared with HMPE and polyester ropes, X21 has higher elongation, fully absorbs impact forces from waves and sand, and provides better safety protection for ships.
Feature:

Technical Information:
- Core:Nylon
- Cover:Polyester
- Specific Gravity:1.24
- Construction:Double Braided
- Melting Point:414°F (212°C)
- Critical Temp:300°F (149°C)
- Elongation At 30% Break:9.7%
- Water Absorption:3-5%
Specification:

Mooring lines
Mooring lines include primary mooring lines and mooring tails.The primary mooring line which requires high strength and light weight is used to fix the vessel on the shore; The mooring tails that connect the primary line and the mooring bollard should have good elasticity and wear resistance, provide the extension performance for the mooring system, and minimize the impact load caused by wind or waves.
The primary mooring lines and mooring tail can be connected with each other through shackles, splicing or cow hitch, which is convenient for releasing, mooring and replacing mooring tails, and prolongs the service life of the whole mooring system. The best way to improve the stability and efficiency of the mooring system is to select the most suitable mooring line according to the needs.
Absorption of impact force
Nylon is a common material used in mooring lines because of its ability to absorb impact forces. When a vessel is subjected to strong winds or waves, it can cause significant tension in the mooring lines, resulting in sudden and strong impacts on the vessel and the mooring system. Nylon mooring line designed to absorb these impact forces by stretching, which helps to reduce the load on the vessel and the mooring system.
The main advantages of nylon mooring lines in absorbing impact forces include their high strength, excellent elasticity, and ability to distribute loads evenly across the line. This helps to reduce the risk of damage to the vessel and the mooring system, and also helps to extend the lifespan of the mooring lines.
Abrasion protection
The service life and safety of ropes are closely related to the wear protection of ropes.
Abrasion is one of the biggest culprits of line damage. Wear can be divided into two types: internal wear caused by relative movement of internal and external yarns; And external wear caused by contact with external surfaces, such as friction on rollers and chocks.
When the rope without any protection moving over a rough surface, it's easy to see when the external strands are abraded by a rough surface. The external friction will also cause the relative movement between the external fiber and the internal fiber, which will aggravate the wear. The external friction is limited to the protective sleeve through wear protection, which also greatly reduces or eliminates the internal wear of fibers.
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