Product Specification

3 Strand Twisted Anchor Line Premium Braided Polypropylene Nylon Anchor Rope for Yacht

1. General Description

QINGDAO JINCHENG MARITIME has serial products including varieties of nylon, polypropylene filament, polypropylene, polypropylene /polyester mixed, polyester. It started a new epoch of rope and cable industry in the country and its products have advantages of reasonable braided structure, scientific technology, high strength, low elongation,wearing resistance, anti-corrosion and simple operation, it is particularly suitable to make large scale ropes and cables as well as anti -static ropes therefore they are well received by broad customers, The products are mainly used in fields of shipbuilding, ocean transportation, national defense and military industry, sea petroleum and harbor operation etc.

2. Main performance

3.Technology Comparison

Coil length: 220m

Spliced strength:± 10% lower

Weight and length tolerance:±5%

MBL=Minimum Breaking Load conform ISO 2307

Other sizes available upon request

4.Parameter Table

Production Process

Step 1: Material Selection and Preparation

• Choose high-grade polypropylene and nylon pellets (or fibers) that meet marine safety standards, focusing on properties like tensile strength, UV resistance, and saltwater tolerance. Polypropylene is selected for its lightweight, water-repellent characteristics, while nylon adds elasticity and shock absorption—critical for anchor line performance.
• The raw materials are melted (for pellets) or processed (for pre-drawn fibers) to form continuous, uniform filaments. These filaments undergo quality checks to ensure consistent diameter and strength, eliminating defects that could weaken the final rope.

Step 2: Fiber Spinning and Strand Formation

• The polypropylene and nylon filaments are blended in a controlled ratio (tailored for yacht anchor line needs) and spun into yarns. The yarns are then twisted together to form individual core strands—three strands total, as specified for the 3-strand design.
• Each strand is tightly twisted to enhance structural stability, with tension carefully regulated to avoid over-twisting (which causes brittleness) or under-twisting (which reduces load-bearing capacity). The strands are also pre-treated with a UV-inhibitor coating to boost long-term resistance to sunlight degradation.

Step 3: Premium Braiding of Individual Strands

• Each of the three core strands undergoes a precision braiding process. Using automated braiding machines, additional polypropylene-nylon yarns are woven around the core of each strand in a tight, uniform pattern. This "premium braided" layer adds abrasion resistance—essential for anchor lines that rub against boat hulls, docks, or seabeds—and reinforces the strand’s overall strength.
• After braiding, each strand is inspected for braid density and consistency; any loose weaves or gaps are corrected to ensure uniformity across all three strands.

Step 4: Final 3-Strand Twisting

• The three braided strands are fed into a large twisting machine, where they are twisted together in a clockwise or counterclockwise direction (depending on design specifications) to form the final anchor line. The twisting speed and tension are calibrated to create a balanced, tight twist that distributes load evenly across all three strands.
• During this step, the rope’s diameter is monitored to meet the required size for yacht use (typically ranging from 12mm to 24mm, depending on yacht weight). The twisting process also ensures the rope retains flexibility, allowing easy handling during anchoring.

Step 5: Post-Processing and Quality Inspection

• The finished rope is cut to standard lengths (e.g., 20m, 50m, 100m) based on common yacht anchor line needs. It then undergoes post-treatment: a water-resistant coating is applied to enhance moisture repellency, and the rope ends are heat-sealed or crimped with metal sleeves to prevent fraying.
• Rigorous quality tests are conducted, including tensile strength testing (to verify load-bearing capacity), abrasion resistance testing (simulating contact with marine surfaces), and saltwater immersion testing (to check for degradation). Only ropes passing all tests are packaged for distribution.

2. Application Scope

Yacht Anchoring (Primary Use)

• Designed specifically for yachts (30ft to 80ft in length), serving as the main anchor line to secure vessels in coastal waters, bays, or marinas. Its polypropylene-nylon blend balances lightweight handling (critical for easy deployment/retrieval by yacht crews) with nylon’s shock absorption—protecting the yacht’s hull and anchor system from wave-induced jolts. The 3-strand twisted structure ensures stable load distribution, even when the yacht shifts in wind or tides.

Yacht Mooring and Docking

• Used as a secondary mooring line to supplement dock lines, especially in areas with strong currents or high winds. Its premium braided outer layer resists wear from contact with dock cleats, pilings, or other yacht hardware, while its water resistance prevents weight gain from rain or salt spray—keeping the line easy to adjust during docking.

Towing Small Watercraft (Yacht Tenders)

• Ideal for towing small yacht tenders (e.g., dinghies, jet skis) behind the main yacht. The rope’s tensile strength handles the tender’s weight, and its flexibility allows it to adapt to the tender’s movement without kinking. The polypropylene component ensures it floats, reducing the risk of tangling with underwater obstacles.

Emergency Yacht Stabilization

• Serves as an emergency anchor line or tow rope in unexpected scenarios, such as engine failure or sudden weather changes. Its quick-deployment design (lightweight and easy to coil) allows yacht crews to secure the vessel rapidly, while its shock absorption provides temporary stability until the yacht reaches safety.

Recreational Marine Activities (Yacht-Based)

• Used for yacht-related recreational tasks, such as setting up temporary swimming area markers (tying to buoys) or securing water toys (e.g., inflatable rafts, wakeboards) to the yacht. Its UV resistance ensures it maintains strength and appearance during prolonged sun exposure, and its non-abrasive braided layer prevents damage to delicate water toy materials.