Gremlins in the chain locker - SailNet Community
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post #1 of 22 Old 04-20-2015 Thread Starter
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Gremlins in the chain locker

Yesterday I was going through a list of function checks to prove that critical systems work before taking the family out on the boat. I found that our primary anchor chain (G4 3/8) was not marked in length, and the bitter end was fixed to the boat without a length of rope. It was generally in good condition except.... for a few isolated links that were REALLY rusted. In each case it was 3-6 links, all bunched together and massively inflicted with red and black rust. In once case the remaining link was only as thick as a wedding ring.

Why would some parts of the chain be so afflicted but other parts be in such good shape? Do you think that parts of the chain were touching a dissimilar metal in the locker?




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post #2 of 22 Old 04-20-2015
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Re: Gremlins in the chain locker

Sitting in a pool of water? Bad metal in the links? Poorly galvanized there?


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post #3 of 22 Old 04-21-2015
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Re: Gremlins in the chain locker

Hey Medsailor: Looks like those areas could be laying on the bottom of the chain locker in the residual mud and salt. We are over in Port Townsend getting the bottom done and the hull waxed. Just yesterday I pulled all 300' of our G4 5/16 chain out of the locker and layed it out on the ground while on the hard. I decided to swap the ends for now, cutting about 15' off of the old anchor end and about 5' off the the bitter end. (It was spliced onto about 200' of 3/4" rope. Took me about an hour to redo the long eye splice.) Now I have to redo all the length markers as they are from the wrong end!

I put down a layer of DryDeck from WM in the bottom of the chain locker to better allow the mud and salt to be hosed out and slow down future rusting.

How long is your chain? Are the bad links in the middle? If so, you may be in for some new chain. I wouldn't sleep at night with those links. 300' seems to be the minimum here in the PNW for bigger boats. Lots of deep anchorages in Canada.

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post #4 of 22 Old 04-21-2015
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Re: Gremlins in the chain locker

Those parts of the chain were at the bottom of the locker with salt water and mud. It takes a lot of time for those rusts to form. This indicates, the anchor is not used for a long time or short lengths of chain was used and those parts were sitting in the locker without being disturbed. If you used your anchor often then you are anchoring in shallow water and not using most of the chain.
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post #5 of 22 Old 04-21-2015 Thread Starter
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Re: Gremlins in the chain locker

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Originally Posted by celenoglu View Post
Those parts of the chain were at the bottom of the locker with salt water and mud. It takes a lot of time for those rusts to form. This indicates, the anchor is not used for a long time or short lengths of chain was used and those parts were sitting in the locker without being disturbed. If you used your anchor often then you are anchoring in shallow water and not using most of the chain.
The boat was lightly used in Florida (shallow water). That probably explains it.

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post #6 of 22 Old 04-21-2015
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Re: Gremlins in the chain locker

Good thing you pulled it out for a look!!

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post #7 of 22 Old 04-21-2015
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Re: Gremlins in the chain locker

I had the same problem with Italian 10 mm x 28 mm chain. Some of it looked like this after 26 months. It was bought new from a major Caribbean chandler who refused any form of recompense.



This gave me a real shock when I found it. It was not at the bottom of the pile and the locker drains into the bilge so there is no question of it sitting in water.

It had been relegated to back up duties after only 15 months use as it was worn enough to jump on the gypsy. This was when I made the claim to the chandlery.

Last edited by TQA; 04-21-2015 at 02:53 PM.
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post #8 of 22 Old 04-21-2015
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Re: Gremlins in the chain locker

Looks like recycled steel with so much impurities made into chain that should never have been for marine use. They sold it to unsuspecting customers knowing full well it should not have been sold to the marine industry.
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post #9 of 22 Old 04-21-2015 Thread Starter
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Re: Gremlins in the chain locker

TQA,

I remember your chain issues. Were they a few isolated links together or longer lengths that were affected?

What puzzles me is that i have 4 or 5 affected areas of 5 or 6 links each. All the rest of the chanin looks good.

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post #10 of 22 Old 04-21-2015
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Re: Gremlins in the chain locker

We all know its a new Boat replace it and move on. There WILL be more things.
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