Module 2 of 17
Ropework
Properties of synthetic ropes in common use aboard yachts.
Rope Types and Materials
Modern yacht ropes are made from synthetic materials. The most common are: Polyester (Terylene/Dacron) — strong, low stretch, UV-resistant, used for sheets and halyards. Nylon (Polyamide) — very strong with high elasticity, ideal for anchor warps and mooring lines because it absorbs shock. Polypropylene — inexpensive, lightweight, floats, but weakened by UV and relatively low strength; used for safety lines.
Dyneema and Spectra are ultra-high-strength, low-stretch fibres used in high-performance halyards and sheets. They are light and extremely strong but more expensive and can be slippery if not handled correctly.
Key Points
- Polyester — low stretch, UV-resistant (sheets, halyards)
- Nylon — high elasticity, shock-absorbing (anchor warps, mooring lines)
- Polypropylene — floats, cheap, UV-sensitive (safety lines)
- Dyneema/Spectra — ultra-strong, low stretch (performance halyards)
Rope Care and Handling
Inspect ropes regularly for chafe, fraying, and UV damage. Replace ropes that show signs of wear at loaded points. Wash ropes in fresh water after use in salt water to remove salt crystals that cause internal wear. Store ropes coiled or on reels, away from chemicals and sharp edges.
Never stand in a bight (loop) of rope — if the rope comes under load, it could trap or injure you. Always keep fingers and hands clear of winch drums and cleats when lines are under load.
Key Points
- Check for chafe, UV damage, and fraying regularly
- Wash in fresh water after salt water use
- Never stand in a bight of rope under load
- Keep hands clear of winches and cleats under load
Tip: A sharp knife should always be carried on deck to cut a rope in an emergency — a jammed sheet or halyard can be dangerous.
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