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Old 24-04-2017, 10:58   #1
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Chain stopper puzzle

Hi Cruisers!

Here's a puzzle for you:

I've refurbished the Ideal windlass aboard the tub, opened up the treasure chest for a new Rocna anchor and 200' of 3/8" HT chain, and put together a bridle of 3/4" nylon as a snubber. That all works swimmingly.

I'd love to have a chain-stopper to back-stop the snubber and to protect the windlass whilst recovering (or breaking out) the anchor. Problem is, the windlass is mounted quite close to the stainless "beak" that forms the bow with the anchor rollers, such that when the anchor is fully shipped, there's only a couple of links between the anchor swivel and the windlass itself, not nearly enough room for a stopper. I'd like to mount the stopper to the beak, between the windlass and the rollers.

Is there a stopper available that would let me release the chain from it's clutches when the anchor is ready to ship, but would allow the chain to be re-engaged with it when the anchor is out? The designs I've found look like they disassemble with a set-screw to get the chain in there, but that's not very useful if I need to take the chain out every time we stow the anchor.

Some kind of quick release, maybe? Ideas?

Here's a picture to clarify the problem:


-K
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Old 24-04-2017, 12:00   #2
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Re: Chain stopper puzzle

Here is my solution to the same problem.

The shackle should probably replaced with something cuttable like Dyneema.

Steve

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Old 24-04-2017, 12:05   #3
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Re: Chain stopper puzzle

Chain stopper should be Hell for strong, its not supposed to carry a load in normal use, but if it ever does, it's going to be a big load.
I don't see how an easily disassembled one could be strong enough.
I have one, and in all honesty, don't like the thing, if chain gets moving through it very quickly, it flips closed.
I'd just as soon devised an alternate method like Panope, no moving parts, Hell for strong
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Old 24-04-2017, 12:54   #4
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Re: Chain stopper puzzle

I could do what Panope has done, when you don't want the chain to move at all. But isn't the other purpose of a stopper is to act as a "ratchet", only allowing inboard chain movement, and protecting the (possibly moving) windlass from shock loads? This would be when you're weighing anchor in snotty conditions, with the bow pitching around.
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Old 24-04-2017, 13:16   #5
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Re: Chain stopper puzzle

Given the tiny space, why not this? Skip the locking plate, take one rope (Dyneema for no stretch) to each cleat (that way the bridle will span the windlass), and put a good lanyard through the apex hole so that you can yank it off with your fingers clear.

Use splice loops on the ropes, since you can't cleat Dyneema, and it's faster anyway.

I use something similar.

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Old 24-04-2017, 13:25   #6
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Re: Chain stopper puzzle

This might be what your looking for

https://www.whitworths.com.au/main_i...AbsolutePage=1

I see what you mean on the ratchet but I'm not sure how much that's really needed. I have seen quite a few commercial boats running a chain hook on a turnbuckle as a stopper.
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