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Old 10-06-2014, 03:16 PM   #1
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Pitting on Anchor Shank

I have enclosed a photo of the shank on my Manson Supreme anchor. Any ideas on what may be causing the pitting? The anchor is connected to 50' of galvanized chain and 150' of nylon rode.
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Old 10-06-2014, 03:41 PM   #2
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Wow, I have a Manson Supreme and it doesn't look like that..... How old is it?
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Old 10-06-2014, 03:47 PM   #3
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Assuming it is a galvanized anchor, bad galvanizing job is my educated guess. Have it sand blasted, pickled and re galvanized by a good shop if one is in your area. Galvanizing is a science and whether improper voltage, amps, poor prep, contaminated solutions who knows but maybe Manson has answer.

Frequent anchoring will wear the galvanizing off, but pitting like you have seems odd.

If it is SS,
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Old 10-06-2014, 04:38 PM   #4
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Anchor was purchased new in July of 2011
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Old 10-06-2014, 05:46 PM   #5
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Send some pics to the manufacturer. Something is not right.
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Old 10-06-2014, 07:47 PM   #6
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We anchor for about two months straight in various locations. I have similar nodules crop up after about a week. I always thought it was something attaching but am reconsidering. I have galvanized chain and a Fortress. Hopefully someone can shed some light to both of us. Is it galvanic?
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Old 10-06-2014, 09:28 PM   #7
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If you are seeing little raised nodules, it is probably baby barnacles. Especially if you anchor for an extended time. What I have are actually tiny pinholes in the galvanizing.
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Old 10-06-2014, 09:36 PM   #8
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Thanks. Believe your right. When looking again at your picture It looks like a bad galvanizing job
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Old 10-08-2014, 06:20 AM   #9
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>Galvanizing is a science and whether improper voltage, amps, poor prep, contaminated solutions who knows but maybe Manson has answer.<

This is flash galvanizing , good for house screws or nails.Arizona fence posts.

Marine Galvanizing is dipped in a molten vat , 3 times if you pay enough.
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Old 10-08-2014, 07:21 AM   #10
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Pitting on Anchor Shank

'Send a pic to manufacturer'


There's your best answer. A two year old anchor should not have galvanizing failure like that.

If you have not ground the surface or tried to modify the finish of it then they should stand by the product.
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Old 10-08-2014, 09:15 AM   #11
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This is most interesting. I have a Manson Supreme as well and have a significant area of rust on the top of the shank. It occurred in the first month of use. I called Manson and sent them a picture. They claimed that the top of the shank must be hitting my bow roller and then the anchor flips overcausing the spot of wear. This is unmitigated BS. I am standing at the bow when the anchor comes up and this never happens. Manson refused to do anything about it.

I would post a picture but I'm anchored right now. When we raise the anchor I will post a photo. I hope Manson is watching this post. Howard
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Old 10-08-2014, 09:29 AM   #12
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Just sent the email below to the VP Sales and Marketing at Manson. Let's see what happens.

Ned,

About a year ago I complained that my new Manson Supreme was exhibiting an area of rust on the TOP of the shank. I was told it was not a fault of the anchor but that the anchor must be rubbing on the bow roller when it is retrieved. I have watched the anchor come up 100s of times and this is not the case. We are full time cruisers and anchor all the time.

It's clear that you have a galvanizing problem. Please visit www.trawlerforum.com and view the thread "Pitting on Anchor Shank." Seems as though others are having a problem as well. Suggest you get ahead of the curve on this problem and offer a solution to your customers. Remember what happened to Rocna when their steel was substandard. Thank you, Howard Mason

Sent from my iPad
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Old 10-08-2014, 10:52 AM   #13
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Manson will need your anchor ID number to chase down where it was built and the detailed galvanizing specs and procedure used. There should be proper documentation for the QA QC used for that batch of anchors.

There are several different ways galvanizing is done and associated cleaning and prep work. It is far more complicated than dipping a piece of steel in a molten bath of what may or may not be a proper zinc plating liquid at 460 degrees C.

Even though galvanizing does not last forever, a newer anchor like yours bears some attention from Manson. A interesting point is to ascertain if the same plating shop is used by Manson today vs say 4 years ago.
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Old 10-08-2014, 11:08 AM   #14
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Greetings,
OK, I've got the wrong anchor BUT it isn't a Manson. Sometimes it's weird.... word association....Manson?
Well, there's Charles Manson...

...and who could forget Marilyn Manson...



Just sayin'
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Old 10-09-2014, 09:57 AM   #15
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I have been in touch with Manson. They asked for more photos. I sent additional photos and am waiting for a response.
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Old 10-09-2014, 02:35 PM   #16
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This should be good. Poor customer service will echo throughout this site for years to come. Let's see if Manson has their sh*t together.
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Old 10-09-2014, 02:40 PM   #17
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As of now, I have no reason to suspect that they won't stand behind their product. The anchor itself has performed well on the Chesapeake bay (mud, mud, and more mud).
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Old 10-15-2014, 10:49 AM   #18
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Manson thinks that this is caused by rocks (I anchor in the Chesapeake Bay, nothing but mud here), or electrolysis caused by the stainless shackle. Either way, they do not warrant any galvanizing failure on any of their products. They recommend I try a can of cold galvanizing spray, or have the anchor regalvanized.
They seemed to think I could get the anchor regalvanized for around $30.
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Old 10-15-2014, 11:27 AM   #19
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Quote:
Originally Posted by BlueYonder View Post
They seemed to think I could get the anchor regalvanized for around $30.
At least we now know why the galvanizing failed after 3 years
  1. The anchor was used
  2. A Wal-Mart $30 galvanizing job was used the first time too
  3. Paint is a good substitute for Manson's el cheapo galvanizing job
And straight out of the horse's mouth
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Old 10-15-2014, 11:32 AM   #20
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