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September 17, 2021 3 min read

Technology Advancements in Mooring Lines

Marina mooring lines or dock lines generally haven’t changed much in the past 30 odd years, until recently.  Walking around marinas one sees many of the same ropes we saw decades ago.  Old and chafed 3 braid rope, used halyards or sheets cut down, ex anchor ropes and some other very odd-looking ropes as well.  In addition, the mentality of ‘if in doubt, just add lots more old ropes’ appears to still be used by some.

What we used to do

The most common dock line over the past decades and still in use today is three strand polyester.  Once a very popular DIY choice for those that could splice it (a dying art for many newer owners) and generally the product used by many who, until recently, got their marina ropes professionally made or purchased premade fixed lengths sold in chandleries.

The downsides of using three strand polyester have always been the time taken (and therefore price) to splice and lack of any length adjustment once spliced.  Because it is impossible to lengthen the rope once spliced, this leads to most lines being over length and having to be double cleated or wound around cleats once or more to get the correct length from fear of having the rope too short and rendered useless.  This in turn leads to some vessels moving excessively in their marina berth causing over-length type issues for marina managers and owners alike or contacting the marina piers or poles.  The stiffer nature developed by these ropes over time, invariably means the splices can’t be undone or moved, and the ropes are more prone to chafe in the longer term.   

Latest technology provides real solutions

These issues have led to the development of a new, marina specific dock line from New Zealand’s Fineline Marine.  Pro Splice is made especially for use as marina and dock lines and is different to other braid products. Firstly, Pro splice is made from highly twisted polyester and has no core, giving it high elongation (shock absorption) and flexibility, exactly what is needed in a dock line.  This is particularly important in marinas that experience water movement like Bayswater Marina, Viaduct Harbour and North Pier at Half Moon Bay.  But most importantly for boat owners is the different splicing technique it requires which takes less time and is therefore cheaper to install professionally.  Additionally, once spliced, the length can be readjusted quite easily and after many months of working life.  All of this coupled with high working loads over a range of sizes, make it the market leader in dock lines. 





Installation

The features of the Pro Splice dock line make it the most versatile and easiest product to use for professionally made marina dock lines.  The reduced splicing time and adjustment capabilities mean Hauraki Fenders can carry out an entire installation on site in one go.  Our customers are attesting to the quality of the dock line and the exact nature of mooring line length being achieved.  Combining this with our full installation service for marina fenders allows us to offer complete marina berth set up packages. 

For customers outside our Auckland service area, we can pre-make mooring and dock lines to the correct length and specification.  We can talk you through the exact measurements and information we need to manufacture your perfect length dock lines. 

Find out more about our Marina Berth Set Up

 

A final word

While boat owners spend thousands on upgrading technology, systems, and comforts on their vessels, the less appealing items such as dock lines and marina fenders tend to be ignored.  For something so critical as keeping your boat safe in a storm or preventing damage when entering your berth; these items should be much higher up the agenda than they usually are. 

Marina managers are issuing more weather warnings these days when conditions are likely to be adverse, requesting boat owners check their vessels and dock lines.  Yet we are continually surprised by the number of vessels we see with old dock lines that are no longer fit for purpose.

If you wish to receive a quote for new Pro Splice dock lines so you can sleep peacefully knowing your pride and joy is securely and correctly in your marina berth then please get in touch.

For more info, please contact us page or if you need something custom made, Request a Quote