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Old 04-10-2012, 16:32   #16
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Re: looking for the "best" swivel for my 5/16" chain

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Originally Posted by Sailmonkey View Post
True,
but it took three months of shallow anchoring to even get to the point where I found it worthwhile to let the chain spin out.
Ah, now we may be getting somewhere - shallow anchoring. Most of our anchoring is in 5-15' of water and we experience chain twist that is ameliorated by our swivel.

These swivel debates always seem to divide people into a group that experiences twist and another that does not. Perhaps the average anchoring depths come into play? Certainly I can see where hauling an anchor up from 50' depths can allow it to untwist the chain during that time, every time. For us, the anchor/chain only has a few feet to untwist before being aboard, so without a swivel most twist works its way back through the windlass and into the locker.

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Old 04-10-2012, 16:37   #17
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Re: looking for the "best" swivel for my 5/16" chain

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Originally Posted by Stu Jackson View Post
One never wants to put a pin through the anchor shank except for a shackle. Always use a shackle so the pin on the swivel, if you use one, rotates off the curved portion of the shackle. Basic Ground Tackle 101.
That is correct. If anyone is in doubt, this link will show the incorrect way to use a kong swivel in the top photo, and the best practice, as I described in the previous post, in the lower photo:

Swivels (Rocna Knowledge Base)
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Old 04-10-2012, 16:38   #18
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Re: looking for the "best" swivel for my 5/16" chain

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Originally Posted by colemj View Post
There is a good chance that its pin would not fit the 5/16" chain.

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You have to use shackles between them.
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Old 04-10-2012, 16:41   #19
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Re: looking for the "best" swivel for my 5/16" chain

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Latitude 38 reported some controversy about Kong swivels a few years back, and the West Marine Product Lab got involved. It turns out that they work best when not attached directly to the anchor, so as to avoid side loading. I have mine set up between the main rode and a small section (18") of chain that attaches to the anchor shackle.

Here's the article, but you'll have to scroll down: Latitude 38 - 'Lectronic Latitude
Side torque on any swivel has the potential for damage. Kong's are much better than the other straight swivels in this regard.

The WASI Powerball is not a straight swivel and has 30* or so of free movement. Beyond that, it is built so strongly that I think the anchor shank would bend first - the "ears" are twice as thick as our Rocna shank.

Don't be fooled by non Kong articulating swivels - these have many reports of failures.

Of course, your suggestion of a shackle and/or short piece of chain solves the problem completely, but does add in another link point in the anchor system.

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Old 04-10-2012, 16:55   #20
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Re: looking for the "best" swivel for my 5/16" chain

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Originally Posted by colemj View Post
Of course, your suggestion of a shackle and/or short piece of chain solves the problem completely, but does add in another link point in the anchor system.
Right. Under many circumstances, adding another link point would be unwise, because it's just one more component that can fail. However, our situation, where we anchor in semi-dirunal tides that swing ever 6 hours, using an anchor that sets so well that it almost never resets after a shift, it's advisable to use a swivel.

In our favorite anchorage, we anticipate going through at least two 180-degree shifts every time we drop the hook. I'm convinced that the swivel results in significantly less stress being transmitted to the anchor shackle itself.
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Old 05-10-2012, 04:57   #21
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Re: looking for the "best" swivel for my 5/16" chain

I think we have a couple Kongs and a Suncor. Or maybe it's a Kong and a couple Suncors

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Old 05-10-2012, 06:29   #22
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Re: looking for the "best" swivel for my 5/16" chain

We also have the Kong, about 12 years old. These are supplied by Airsports LLC, out of Bristol, RI. They were very helpful in discussing use, quality, reliability and recalls (none that they are aware of) and even sent a replacement screw pin. The only issue is inspecting and securing the pin each year (that reminds me, I need to do this!).
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Old 05-10-2012, 06:43   #23
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Re: looking for the "best" swivel for my 5/16" chain

Good information on this web site, with some independent testing of swivels.

Connectors
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Old 05-10-2012, 18:57   #24
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Check out DCD in British Columbia.
They have a website and manufacture swivels used in many industries and are break test rated.
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Old 05-10-2012, 20:42   #25
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Quote:
Originally Posted by Don Lucas

You have to use shackles between them.
The Kong swivel will fit 5/16" on on side but not the other, so use a foot o 3/8" chain between anchor and swivel, at least that worked for us.
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