Amazing Underwater Photos of an Anchor Swivel Failing

[JPA Cate]

Noelex,

Your thread just drifted into lala land.

Ann

[DoubleWhisky]

Originally Posted by DoubleWhisky

They were chics, not mermaids, downunder

My suspicion is the real Mermaids dig monohulls

Originally Posted by Cotemar

I always have plenty of women aboard, but never Mermaids. Noelex has a catamaran and a Mermaid. He is taking the game to a higher level.

Hope I do not talk in my sleep. My wife might not like me saying I wish I had a mermaid in the middle of the night..........

Originally Posted by downunder

How good is it to have a chic on board who is a mermaid.



The way to go.

Yes, downunder, You are right, and now I know for sure Noelex is sailing with his Mermaid on the monohull, not a catamaran.

So our friend Cotemar is playing the wrong game...
Mermaids definitely prefer the monohulls.
I think it is also true about many chicks

Of course, having a chick being the Mermaid is far better, than to have any regular chick on board - even plenty of them.
May be one need to have a monohull to really understand this...?...
But I think, downunder, than even on a catamaran You will play the game right.
You, Aussies, are good in this game. Noelex, hoppy...

Cheers to all Mermaids

[darylat8750]

Originally Posted by S/V Alchemy

My understanding is that if they touch, the "circuit" is completed, and the failure can come at any pre-extant weak spot in that link or link.

I believe they don't have to touch. The salt water will complete the circuit.
However I don't think that is really the issue in this case. I think stress corrosion is the main culprit. All it takes is a stress riser from bending or welding that may not even be visible with the naked eye. There is a reason riggers look at stainless fittings on the rig with a magnifying glass.

There are navel architects that are adamant that NO stainless steel should be used below the waterline. (Even though many production boats use SS keel bolts. Look at the price of bronze bolts that big.)

[noelex 77]

There have been a few requests for some mermaid photos. So here is another of her diving down to a Bugel copy.

My mermaid says: "One tail one hull. Bipeds can take their pick"

[DoubleWhisky]

Originally Posted by noelex 77

There have been a few requests for some mermaid photos. So here is another of her diving down to a Bugel copy.

Nice photo, really
This neon-orange thing is a weight belt, I guess?

[DoubleWhisky]

Originally Posted by noelex 77

My mermaid says: "One tail one hull."

Downunder, You can still think about a mono...
Not all is lost for You yet

On the other hand Cotemar is on the Dark Side of the Force already...
No hope for mermaids...

[downunder]

Noelex,

No fins. No doubt you also have her cooking for you also.

You really must buy a decent set of freediving fins for such a valuable asset as your mermaid.

Plenty of colourful ones just don't buy the el cheapo supermarket brands.

There are a few excellent brands made in the Med countries.
Mares, Cressi, Immersion, Sporasub, Omer, etc

Your reward - even better photos.

First site I selected from a google search for freediving fins.

Freediver Shop | Freediving - Fins & Monofins
https://www.google.com.au/search?q=f...ml%3B800%3B533

[noelex 77]

It is all I can do to get her to put bikini bottoms on for the photos.

[downunder]

Originally Posted by DoubleWhisky

Downunder, You can still think about a mono...
Not all is lost for You yet

On the other hand Cotemar is on the Dark Side of the Force already...
No hope for mermaids...

Monofins yes

Great for mermaids.

[GMac]

Originally Posted by hellosailor

Gmac-
"Sure that swivel didn't fail just because it was made for 5c in a eastern country? "

You foreigners from outside the US might never have heard this, but along time ago, maybe 30-40 years ago, there was a big kerfluffle in the US National Nooze about radioactive stainless steel dinnerware being sold on the US market.

Apparently some clever scrapyard bought some hospital metal scrap, and some of that metal scrap was a nice stainless steel box containing some high radiation source for medical purposes.

And it all went into the smelter for recycling, to make generic "stainless steel" dinnerware.

Guys, you know, metal casting today is done no more carefully than rocket science, and the same way that NASA occasionally blows O-rings, confuses metric with inch, and manages to land less than 1/3 of all Mars probes on Mars (I know that's not NASA's fault, the Martian air defenses are among the finest in this solar system)...

Who's to say what is in an anonymous piece of metal from an anonymous vendor in an anonymous supply chain where everyone keeps trying to squeeze another nickel out?

How to make money while cruising: set up an x-ray and metallurgy lab across from your galley, and offer rigging inspections on the high seas?

While I don't know the specifics on this particular shackle I 100% totally agree with this bit
"Who's to say what is in an anonymous piece of metal from an anonymous vendor in an anonymous supply chain where everyone keeps trying to squeeze another nickel out?"

We have European, US and Asian 316 stainless steel products in a few lines (price points some people want) and I can assure you 1 of the 3 isn't and doesn't work the same to other 2. I fact we have seen Asian stuff marked up as 316 that wasn't even stainless steel.

Mind you if you pay 90c for a 3/8" (guessing the size) swivel what do you expect. Yes that's about how much they cost to buy from the asian manufacturer.

If you hunt back a couple of years there is a photo on CF of a 5/8" swivel just the same. It was sold has having a break load in excess of 22,000lb. The photo clearly shows it wouldn't make it to even 40% of that load before total failure. Those 5/8" versions cost about $2 to buy ex Asia. Is it any wonder it didn't cut the mustard? Nope.

[hellosailor]

GMac-
Being a hairy wide-eyed barbarian and hardly distinguishable from the other lower animals...I might agree with you about regional trade practices being different as you get closer to the heavenly kingdom. However, if I did have such wrongful thoughts, the forum staff would quickly remind me that those thoughts might be considered disparaging of a people, region, or nation, and as such unsuitable to express anywhere near this forum.
They had a problem with inferior counterfeit cable during the first round of bids for the Brooklyn Bridge, too. All domestic US production. Maybe, vendors and their sovereigns just need to be in business for a couple hundred years before they assign "Western" values to these things, huh? (Oh no, I said "Western", that's potentially disparaging again, isn't it?)

[Nicholson58]

Great photos!!

ONCE MORE.

SS does not belong between an iron anchor & Chain.

SS has a lower yield point than Crosby or other proper steel & galv. shackles.

Picture below shows a better shackle & forerunner swivel in our 7/16 chain. (didn't use the one with the red pin - too small

If you use public moorings, especially facing a storm, cary spare shackles & dive on the pin. Be prepared to replace junk.

[sy_gilana]

Looks like a Gulet, can't tell them anything...

Seriously, a stainless anything on a galvanized or mild/hardened/cast steel device underwater is just crazy. The failure was crevice corrosion, right on the weld, mixed metals.

I have never seen the need for a swivel of any type on an anchor, its a liability, prone to failure, and it does nothing but give trouble like the anchor pointing the wrong way as it comes to the bow roller.

We have two 30 Kg anchors aboard that we found while snorkeling, both of them had a half a swivel still attached.

Stainless is not a material for down there on the bottom.

[SVNeko]

Crevice corrosion has nothing to do with mixed metals.

Sent from my SM-T210R using Cruisers Sailing Forum mobile app

[Jim Cate]

Originally Posted by SVNeko

Crevice corrosion has nothing to do with mixed metals.

Sent from my SM-T210R using Cruisers Sailing Forum mobile app

Absolutely correct, SVN, but one just can't convince these experts.

Jim