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To determine the correct rope for your individual requirements, it will first be helpful to consider whether the line will be single or...
To determine the correct rope for your individual requirements, it will first be helpful to consider whether the line will be single or multi-purpose.
A multi-purpose solution may involve some compromise but not necessarily a reduction in suitability or quality as many rope properties are quite similar.
Budget and stowage constraints may dictate how many ropes are designated for specific tasks and how many are conveniently handy for deployment across a range of different mooring situations.
Personal choice is a big factor: what you and your crew are familiar and comfortable with is very important.
The Jimmy Green Rigging Team are on hand to advise on the relative merits and disadvantages of the rope that you normally prefer, and they can suggest suitable alternatives if you wish to explore your options.
Stretch Factor – mooring lines need to absorb snatch loads and maintain the capacity to elongate and recover without suffering premature stress failure. Polyester has the required amount of working stretch for mooring and the ability to absorb surge loads can be enhanced with mooring compensators. Polypropylene stretches a little more than polyester. Nylon is the most elastic of the three materials, approximately 5-10% more elongation than polyester.
Strength and Durability – mooring ropes need to manage the substantial strain experienced in securing a yacht in your chosen configuration (the number of ropes that effectively divide the load) so relative diameter and break load are important factors. Nylon is initially the strongest mooring rope but it is a widely held belief that it loses 10-15% when thoroughly wet which brings it back to relative parity with polyester. Polyester has better UV resistance than nylon which means that it builds a small advantage each season resulting in a longer working life. Polypropylene is not comparable to the other two materials and should not be considered unless stepping up in diameter.
Abrasion Resistance – depends on what the rope is made from, how it is manufactured and to a lesser extent, the finished construction. Polyester and Nylon have comparable performance with Polypropylene again a distant third. LIROS employ heat setting technology and special twisting techniques on the fundamental filaments and yarns to enhance wear performance.
Nylon shrinks when it is wet resulting in a tightening of the rope strands creating a harder, stiffer rope. This can be of benefit for permanent single purpose warps.
Comfort – rope construction and diameter make a difference to comfort, especially for more delicate hands. Braided Docklines are commonly regarded as the most flexible, luxurious handling rope for mooring. Octo (Anchor) plaited ropes are also flexible and comfortable to handle. 3 strand rope is generally regarded as less kind to the hands but is probably still the best all round choice for most mooring applications.
Handling, Coiling and Hanking - rope construction dictates how you should hank a rope into a coil for stowing and throwing/heaving. 3 strand rope needs to be rolled around your thumb to keep the lay in regular form. Braided and Plaited ropes should be allowed to form a figure of eight shape to ensure that you are not imparting twist into the rope.
UV Resistance – Everything degrades in the sun. The speed at which the deterioration occurs depends on what the rope is manufactured from. Polyester is best with nylon a reasonable second and polypropylene a distant third. UV stabilising techniques help but don’t significantly alter the general comparable resistance values of each substance. Counteracting UV deterioration should be a major consideration for yachts in the Mediterranean and the Tropics.
Summary - Polyester is the best all round fibre for mooring applications. Nylon has additional elasticity and can develop a harder finish which is of benefit for certain solutions. Polypropylene isn't really comparable and should only be selected to take advantage of the fact that it floats.
You can select your preferred optimum rope for each purpose: base material (rope type), construction, diameter and exact length.
Spliced loops to conveniently drop over cleats or bollards, remember to allow just enough extra to pull the loop to the furthest extremity of the horn before it drops over and sits neatly around the cleat base. Spliced loops can be ordered with anti-chafe webbing fitted.
Spliced thimble eyes for connecting shackles to rings or other fixed attachments on the pontoon or harbour wall. Stainless steel connections reduce the chances of abrasion.
Mooring Compensators threaded onto the lines before splicing to add extra shock absorption where it’s most needed.
Chafe Protection threaded onto the lines before splicing to protect the most likely wear points.
You can select one rope type suitable for all your mooring requirements. This may help the crew to become more proficient at critical moments.
Spliced loops on one end can be very helpful when trying to secure your yacht in difficult wind and tide conditions.
All non-spliced rope ends should be heat sealed and whipped to prevent fraying.
Bow and Stern lines can be made off and doubled back to make a spring.
Longer lines can be deployed to attach directly to the pontoon when your yacht is outside several others on a visitors pontoon.
It’s generally good practice to have two long lines in your rope inventory for when you’re rafted out on a visitor pontoon. It is not advisable or the done thing to rely on your inner neighbours to keep you securely moored to the jetty by simply tying up to next door’s cleats. You will create extra load on their lines and fittings which will not be appreciated and in any case may expose their lack of strength and suitability.
It’s also a good idea to consider a towing line for emergencies. Stowage room and extra cost may lead you to designate an existing mooring or anchoring warp for this purpose. Just bear in mind that the rope ends need to be finished in a versatile manner so that the line is genuinely multi-functional. A towing warp needs to be long and fairly stretchy so is reasonably compatible with doubling up as rafting out, kedge or drogue warps.
The most popular all round choice ~ optimum choice on all counts except for handling where it's not quite as comfortable as braided or plaited lines - and the least expensive of the three options.
More commonly used for anchoring warp but has all the required properties for mooring, a little more comfortable to handle than 3 strand and on a par with Braided Docklines in terms of cost ~ 12 plait hollowbraid is available at a lower price point.
The most comfortable handling with all the benefits of polyester fibre, specially twisted filament yarn for optimum endurance.
Select the most suitable mooring rope to meet your requirements from the comprehensive range on view.
Jimmy Green Marine offer the following LIROS Mooring Warp rope options from stock in Beer, backed up by the premium supply chain uniquely offered to us in the UK by LIROS Yacht Ropes, Germany.
LIROS 3 Strand Polyester Article 00111/01110 - manufactured to DIN EN ISO 1141 standard (previously DIN EN 697, DIN 83331) - The most popular choice for permanent pontoon mooring lines - Dependable strength and durable abrasion resistance combined with >15% working load stretch.
LIROS Braided Dockline Article 00133 (Porto) from 10mm - 24mm diameter - 20 plait cover and braided core, 100% Polyester, special twisted twine construction:
High elasticity >15% working load stretch - high load capacity - super flexibility - soft handling - balanced braiding, non kinking - eminently throwable - excellent UV and abrasion resistance
The logical choice choice for mooring alongside.
LIROS Superyacht Dockline Article 01300 is available to order in 24mm, 28mm and 32mm diameter - 24 plait special coated cover and braided core, 100% Polyester, special twisted twine construction
High elasticity >15% working load stretch - Highest load capacity - super flexibility - good handling - balanced braiding, non kinking - Superb weather and wear resilience.
LIROS Moorex12 Article 00132 - Hollowbraid 12 plait construction, 100% Polyester > 15% working load stretch and dependable strength - spliceable, super flexible and throwable, excellent constructional shock absorption, ideal for guest lines.
LIROS Handy Elastic Article 00136 - Special 1:1 Plait cover and braided core, 100% Nylon (Polyamide), the ultimate shock absorbing mooring line >20% working load stretch, super pliable and comfortable in the hand - distinctive colour = navy with yellow markers.
LIROS Octoplait Polyester Article 01049 - 8 Strand, Balanced, Square Braid Construction, 100% Polyester - super pliable, spliceable to chain, Reliable load capacity and abrasion resilience combined with excellent constructional shock absorption >15% working load stretch.
LIROS 3 Strand Polypropylene Article 01120 - pliable, floating alternative with a finish very similar to 3 strand nylon and polyester mooring lines.
LIROS Octoplait Polypropylene Article 01078 - 8 Strand, Balanced, Square Braid Construction, 100% Multifilament Polypropylene - floats, very light and flexible, effective floating warp, good shock absorption >15% working load stretch.
However, even after UV stabilisating, polypropylene is susceptible to deterioration in the sun and is not as strong as polyester.