myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website

Welcome to myHanse.com the forum for Hanse Yachts owners throughout the world.

Forum Home Forum Home > General > Chit Chat
  New Posts New Posts RSS Feed - Stainless Anchor chain
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Stainless Anchor chain

 Post Reply Post Reply
Author
Message
Gale Force View Drop Down
Lieutenant Commander
Lieutenant Commander
Avatar

Joined: 26 June 2018
Location: Sri Lanka
Status: Offline
Points: 51
Post Options Post Options   Thanks (0) Thanks(0)   Quote Gale Force Quote  Post ReplyReply Direct Link To This Post Topic: Stainless Anchor chain
    Posted: 03 March 2019 at 09:28
I never would have believed if someone told me their anchor chain snapped.
Mine did a couple of days go.
It broke while dropping as it went round the windlass with no jam the chain was flowing nicely and then we watched the tail go overboard .I was anchoring in 8m flat sea with little current.No sound, it just separated.The anchor went down with about 20 mts chain.Diver has been down but to no avail.Being quite shocked I was not quick enough on the co ords.
10mm 100mtr stainless chain and anchor 4.5 years old.
Boat and all aboard safe.Thank god it did not happen the night before.It would all have ended completely differently.20+Knts breeze in a busy congested anchorage.

Duncan
Back to Top
S&J View Drop Down
Captain
Captain
Avatar

Joined: 30 August 2014
Location: UK
Status: Offline
Points: 270
Post Options Post Options   Thanks (0) Thanks(0)   Quote S&J Quote  Post ReplyReply Direct Link To This Post Posted: 03 March 2019 at 09:57
As you say, it's difficult to believe!  Do the links adjacent to the separation show anything to suggest how this happened?
The galvanised chain on my last boat was in perfect condition after 20 years although I did replace the shackle/swivel attachment a couple of times.

I have heard that oxalic acid and possibly other deck cleaners can have a detrimental effect on galvanised chain if not rinsed off, but I would imagine stainless to be impervious to that.

H385 #351 Ningaloo UK south coast (2018)
Back to Top
Samtutuki View Drop Down
Commander
Commander


Joined: 12 November 2013
Location: Australia
Status: Offline
Points: 103
Post Options Post Options   Thanks (0) Thanks(0)   Quote Samtutuki Quote  Post ReplyReply Direct Link To This Post Posted: 03 March 2019 at 23:52
Sounds like a case of crevice corrosion. Google the term. 
Back to Top
Gale Force View Drop Down
Lieutenant Commander
Lieutenant Commander
Avatar

Joined: 26 June 2018
Location: Sri Lanka
Status: Offline
Points: 51
Post Options Post Options   Thanks (0) Thanks(0)   Quote Gale Force Quote  Post ReplyReply Direct Link To This Post Posted: 04 March 2019 at 11:32
There is nothing on the links to suggest any kind of a problem

Duncan
Back to Top
Ratbasher View Drop Down
Lieutenant Commander
Lieutenant Commander


Joined: 31 May 2017
Location: UK
Status: Offline
Points: 57
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ratbasher Quote  Post ReplyReply Direct Link To This Post Posted: 06 March 2019 at 14:58
Regret I've come across this on three occasions on other boats, though failures were due to crevice corrosion on the central pin in a swivel connector, never a link in a chain. However, I understand that impending failures in SS are very hard to spot if at all by eye and that failures, as you found, occur without warning.

What's really surprising is the very young age of the chain so at the risk of stating the obvious, manufacturing error seems most likely. Where did it come from? Interestingly, a recent test in one of the UK boating mags found that Chinese-made galvanised chain exceeded the quoted breaking strength in several samples so 'made in China' should not necessarily be an issue.

Very pleased to read that you escaped without more than a very unwelcome surprise!       
Rat

H400 'Wight Leopard', south coast UK
Back to Top
Gale Force View Drop Down
Lieutenant Commander
Lieutenant Commander
Avatar

Joined: 26 June 2018
Location: Sri Lanka
Status: Offline
Points: 51
Post Options Post Options   Thanks (0) Thanks(0)   Quote Gale Force Quote  Post ReplyReply Direct Link To This Post Posted: 07 March 2019 at 04:05
The chain and anchor were supplied
with the boat.The boat (575) was commissioned in 2014.

Thanks for the interesting replies

Duncan
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.01
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.027 seconds.

Links : www.hanseyachts.co.uk www.hanseyachts.com www.fjordboats.co.uk www.dehler.co.uk www.varianta.co.uk