Mooring line springs

MARNEN

MARNEN

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Hi I have searched the forum and cannot find the post I am looking for. Help needed please.
The article was about mooring line springs and there was a link to method of crocheting a spring into a mooring line.
Can anyone point me to the relevant post please.
 
MARNEN said:
Hi I have searched the forum and cannot find the post I am looking for. Help needed please.
The article was about mooring line springs and there was a link to method of crocheting a spring into a mooring line.
Can anyone point me to the relevant post please.
Click to expand...

By 'spring', do you mean the line referred to as a spring, or the contraption with a metal spring used to cushion mooring lines? I suspect the latter. If so, most of the ones I see (and there are heaps of them within 50 metres of where I'm sitting) are usually secured with a hard eye and shackle.

P.S. Yes, just done a quick survey: around 75% have a hard eye and shackle. Of the remainder, a few have a warp looped through the eye of the spring, some with flexible plastic pipe to reduce chafing; others take an extra turn around the eye to reduce localised wear. Others use a large diameter shackle to the same end. All these boats are moored stern-to in a marina occasionally subject to heavy surge.

Sorry I can't help you your 'crotcheted' solution, although I'd be interested in it if it turns up.
 
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Has anyone used a compensator / snubber with a mooring chain, by attaching with rope or shackle across a loop of chain?

Normally the weight of the chain and riser absorbs surges but just wondered whether a couple of heavy duty rubber snubbers would reduce snatching in storm conditions?
 
sailorman said:
any of these will do
http://www.marinescene.co.uk/category/387/mooring-compensators
Click to expand...

Looking at this link my interest was taken by the "bungee " snubber. Does anyone know how this works or what the apparently little loops of bungee look like?
Our club has a large marina with what we call pens (moorings from a jetty with piles at the outside end so you moor bow in or stern in with finger jetties between. The jetties are not floating as the tide change is small.
Now historically A heavy chain had a large concrete weight dangling on the end. The mooring lines were taken from a point midway down the chain. All OK but the chains wore and the weights fell off.
The club then in their wisdom mandated that mooring lines must have "forsheda" compensators fitted when counter weights failed. Forshada are a big 30cm piece of rubber with holes in the end. The rope goes through a hole at one end around the rubber a few times then through the other hole. The forsheda were fitted and seemed to work fine but in many case broke probably due to sun damage after a short while. It left the club a bit embarassed.
http://www.jpwmarine.com.au/products/new-products/mooring-spring-compensator-forsheda.aspx
It seems there are metal spring types available which might be noisy. Hence I wonder what can be done with bungee that might be a lot more cost effective. Which might parallel the OP question.
Any ideas? olewill
 
William_H said:
Looking at this link my interest was taken by the "bungee " snubber. Does anyone know how this works or what the apparently little loops of bungee look like?
Any ideas? olewill
Click to expand...
I use "the little loops of bungee" although they are actually made of hard rubber/plastic that clip open and then closed around the lines and then flex under tension. I am very happy them. There is not a lot of "give" in each but 2 or 3 together work very well absorbing surging and are very easy to fit and detach when the lines are already in place. I have also used them on a snubber.
I got mine quite cheaply at LIBS a few years ago.
 
arawa said:
I use "the little loops of bungee" although they are actually made of hard rubber/plastic that clip open and then closed around the lines and then flex under tension. I am very happy them. There is not a lot of "give" in each but 2 or 3 together work very well absorbing surging and are very easy to fit and detach when the lines are already in place. I have also used them on a snubber.
I got mine quite cheaply at LIBS a few years ago.
Click to expand...
+ 1
I have used them for more than five years now. Three per warp is ok.
 
ianj99 said:
Has anyone used a compensator / snubber with a mooring chain, by attaching with rope or shackle across a loop of chain?

Normally the weight of the chain and riser absorbs surges but just wondered whether a couple of heavy duty rubber snubbers would reduce snatching in storm conditions?
Click to expand...


Yes, I have done it and found it effective.
I rove a c12mm line through the snubber in the normal way and then worked a eye at each end (as close as practical to the snubber) with a metal thimble. The thing can then be shackled to the chain as required.
For a swinging mooring the whole lot might be fed through length of fire hose to protect your topsides, just.
 
William_H said:
The forsheda were fitted and seemed to work fine but in many case broke probably due to sun damage after a short while.
Click to expand...
I suspect that's because they left the rope too slack between the attachments. I've seen some set up like that. I think the idea is that under high tension the rope is nearly straight with the forsheda running round it. It's not supposed to be a bungee!
Mine are getting on for 7 years old and used on an exposed mooring. They still look ok.
 
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