Yes although not this precise type - we have a pair of Inox (stainless) ones with 18mm warp at one end and 10mm chain looped through/round quayside cleat at the other on the stern of our boat (moored stern-to in the Med)
Used to counteract the forces of the tramontana/Mistral on the French Spanish border.
Stops the snatching completely saving both warp and cleat and seems to stop creaking of warp when tightening on cleat too - just need to squirt them with WD40 every now and again to stop the spring squeeking.
Very smart version of a spring or rubber snubber you can probably buy at the local chandlery for much less. The principle is invaluable and we use them a lot when in marinas to take the pressure off both our sleep and the boat fittings.
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Well they seem to be about £16 which is very competetive of correct, I bought something similar recnetly for £20 and thought that was a good price.
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That's what I thought! Looking at prices for the normal spring type, they seem to be dearer & require lines to be shackled on @ each end. Think I might give these a go then /forums/images/graemlins/ooo.gif
I'm a big fan of rubber snubbers and we have them in our bow lines in our berth. We also use them in an anchor line snubber that transfers the load from the windlass to the bow cleat, plus we have three of our other mooring lines rigged with them ready if needed when we are in visitor berths in more exposed places.
Be wary however of the steel spring types IMO because we have seen several boats using these on berth lines (usually on the spring lines) where they have damaged the hull by coming into contact with it under constant movement. Rubber as opposed to metal ones would cause no damage. In our case we use rubber ones only and our berth is set up with a single nylon spring line (no snubber) to keep the bow clear of the pontoon (bows in) and with rubber snubbers in both bow lines to allow the boat some movement aft as they stretch but not to go forward more.
There are several types of rubber ones and in different sizes and elastic stretch, we use the ones that look like a rubber dogbone with two eyes in each end. The line weaves through the eyes, wraps several times (more wraps = more stretch allowed) around the body and then through the other end eyes.