Page 12 - Knots in Use (1st Edition)

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An anchor braid will also have better ‘give’ characteristics for absorbing
shock loads than a laid line will. When lying at anchor in strong winds and
rough water, the shock loads on the rode and on the deck fittings can be
substantial and the braided construction copes with these by virtue of the
springiness of its construction as well as the elasticity of the nylon itself. A
laid rope has far less constructional ‘give’.

Capstans and windlasses should be able to cope equally well with either
type of construction.

When it comes to mooring lines, it’s common to see all sorts used – laid,
braid on braid and anchor braid – in nylon, polypropylene or polyester. All
too often they are offcuts from old headsail sheets that have seen better
days. Though it’s understandable that owners use such lines rather than
just put them in the rubbish bin, it’s not advisable. If the lines have reached
the end of their working lives for one purpose, it’s likely that they will be
no better for another, especially the serious task of securing your valuable
investment to the dock.

There are, of course, arguments in favour of each material – nylon, polyester,
polypropylene – but, after cost, the thing to look for is ultraviolet resistance,
since these are the lines that will be exposed to the sun for most time. It’s a
sad fact that the majority of boats spend far more time moored than at sea,
so their docking lines are the most heavily used.

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27/06/2013 14:22
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