Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 08-11-2014, 14:04   #61
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,089
Images: 12
Re: Anchors - Is One Enough

Quote:
Originally Posted by sailorboy1 View Post
stainless anchors ......................... ooh shiny

is there more to say about it really?
Having once owned a SS anchor with SS chain, the mud just slides off it and it comes up clean. If one anchored in muddy areas a lot (Chesapeake, for example), these are really nice things to have. SS chain also collapses very well into an anchor locker and never piles up.

Plus, magic stuff are done to them to make them super strong and super special. Don't bother googling for that - it's a secret.

Mark
__________________

__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 08-11-2014, 14:09   #62
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Helsinki (Summer); Cruising the Baltic Sea this year!
Boat: Cutter-Rigged Moody 54
Posts: 24,406
Two anchors. 45kg Spade primary, large Fortress kedge. Fortress at all times ready in the anchor locker.

I used to have a 25kg Delta as a spare, but gave it away. Silly to drag around 25kg of pure dead weight.

The Fortress gets used. Deployed off the stern when Baltic mooring bows to.

It's also instantly deployable in case of any emergency.
__________________

__________________
"Parce que je suis heureux en mer, et peut-être pour sauver mon ame. . . "
Dockhead is online now   Reply With Quote
Old 08-11-2014, 15:15   #63
Registered User
 
rwidman's Avatar

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: Anchors - Is One Enough

Quote:
Originally Posted by Kenomac View Post
............. One fact is for sure... A galvanized anchor WILL eventually rust and corrode.................
Of course it will. Another fact that's for sure... We will all die and turn to dust. The question is; which will occur first?
__________________
Ron
HIGH COTTON
Sent from my laptop using Windows 7
rwidman is offline   Reply With Quote
Old 08-11-2014, 17:04   #64
Marine Service Provider

Join Date: May 2012
Location: New Orleans
Boat: We have a problem... A serious addiction issue.
Posts: 3,979
Re: Anchors - Is One Enough

Quote:
Originally Posted by colemj View Post
Yes, this is correct and a very good feature of stainless anchors. To put it in perspective, however, our galvanized Rocna is 7 years old and has been in full time use. The first 1.5" of the tip lost its galvanizing last year and is starting to rust a bit. I suspect in another 4-5 years, the whole thing will start to rust.

Our galvanized Rocna anchor costs $570. The SS version costs $3,000. So I can buy 5 galvanized anchors for less money than a single SS one. This should last me 55 years.

If I wanted an anchor to last more than 55 years, then the SS version would be a good deal indeed.

Conflating SS use in fasteners with that in anchors is just silly. How often do you even see your anchor? Ours is buried in the bottom 90% of the time - on deck only for passages, where it doesn't cause any staining or damage to fittings from rust expansion.

BTW, are you also using SS chain?

Mark
My advice is to go with titanium G5 anchors. The company i used to work for made one for the owners boat. Same strength as steel, weight like aluminium, cost... Well it cost like titanium.

About the same size as a 35kg Ronca, cost something like $10,000. But it was guaranteed for 100 years.
__________________
Greg

- If animals weren't meant to be eaten then they wouldn't be made of food.
Stumble is offline   Reply With Quote
Old 08-11-2014, 17:46   #65
Registered User

Join Date: Feb 2013
Location: Rio Dulce, Guatemala
Boat: Seafarer36c
Posts: 4,991
Re: Anchors - Is One Enough

Quote:
Originally Posted by colemj View Post

Plus, magic stuff are done to them to make them super strong and super special. Don't bother googling for that - it's a secret.

Mark

That's pretty funny. Sometimes I feel like i can know as much about some simple things as some "real metallurgist" just by going to google. Those guy's should not publish if some yacht owners want it to seem so esoteric. It's not above the understanding of humble sailors who can read and do a simple search.
Ecos is online now   Reply With Quote
Old 08-11-2014, 20:57   #66
Registered User
 
Kenomac's Avatar

Join Date: Jan 2012
Location: Pangaea
Posts: 10,492
Re: Anchors - Is One Enough

Figure it out yourselves, you guys obviously know best using just a Google search.
Kenomac is offline   Reply With Quote
Old 09-11-2014, 05:09   #67
Registered User

Join Date: Mar 2011
Location: Caribbean
Boat: Oyster 66
Posts: 1,133
Re: Anchors - Is One Enough

Quote:
Originally Posted by Kenomac View Post
Poiu,

Broken bolts and welds are an entirely different issue caused mostly by improperly treated stainless, followed by oxygen deprivation. Or in the case of your weld... A bad weld improperly treated. A stainless steel anchor properly formed, welded, then chemically treated with nitric acid won't suffer the same fate and will have high strength and resistance to rust and failure. Information that can not be found on a chart or Google search.

Like I stated earlier, not all stainless is created equal, how it's treated and constructed has to be taken into consideration... Not just the yield strength of a piece of bar when comparing to steel. One fact is for sure... A galvanized anchor WILL eventually rust and corrode.

Question: When those 316 bolts failed on your boat, did you replace them with galvanized? No you most certainly did not.... you went with stainless for it's rust and corrosion resistance properties.
I don't think the treatment of the bolts is an issue. There would be stress corrosion cracking regardless of the treatments you describe. The stresses that create the problem arise mainly post manufacture. The nitric acid treatment you mention is not used much now as it doesn't do a lot. What does work is polishing, even better, electro-polishing. That helps your anchor look good and to reduce pitting problems. It does little for stress corrosion.

Also, oxygen deprivation is not an issue with my failures. I only gave examples of SCC. Not crevice corrosion. The weld may have been poor skill or technique.

You may be lucky with you anchor. 316 is a beautiful material and if you don't stress it and if you don't bury it in mud with no O2 for a long time and if the welds were done carefully, it should serve you well. I wouldn't take these risks though.

With regard to the OP. I have two a main Rocna and a Fortress. The second is needed for backup, for rare kedge use and rare twin anchoring. So I don't think one enough. If two is enough, is the question I am less sure about.
poiu is offline   Reply With Quote
Old 09-11-2014, 06:08   #68
Registered User
 
rwidman's Avatar

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: Anchors - Is One Enough

Quote:
Originally Posted by Stumble View Post
My advice is to go with titanium G5 anchors. The company i used to work for made one for the owners boat. Same strength as steel, weight like aluminium, cost... Well it cost like titanium.

About the same size as a 35kg Ronca, cost something like $10,000. But it was guaranteed for 100 years.
Was it guaranteed against loss? I would think the reason most people buy replacement anchors is that they got them hung up on the bottom and had to cut them loose, not that they broke.
__________________
Ron
HIGH COTTON
Sent from my laptop using Windows 7
rwidman is offline   Reply With Quote
Old 09-11-2014, 06:11   #69
Registered User
 
rwidman's Avatar

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: Anchors - Is One Enough

Quote:
Originally Posted by colemj View Post
............. our galvanized Rocna is 7 years old and has been in full time use. The first 1.5" of the tip lost its galvanizing last year and is starting to rust a bit. I suspect in another 4-5 years, the whole thing will start to rust...............
You can have it regalvanized. And you can do it over and over again.
__________________
Ron
HIGH COTTON
Sent from my laptop using Windows 7
rwidman is offline   Reply With Quote
Old 09-11-2014, 06:19   #70
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,089
Images: 12
Re: Anchors - Is One Enough

Quote:
Originally Posted by rwidman View Post
You can have it regalvanized. And you can do it over and over again.
Yes, I know that but was making a point using the worse possible case. Regalvanizing just makes that point more so.

However, regalvanizing of something this small isn't always easy to find, some of it is not good, and often times the cost is 50% or more of a new anchor.

And I couldn't find any info on google about regalvanizing…

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 09-11-2014, 06:53   #71
Senior Cruiser
 
Randyonr3's Avatar

Cruisers Forum Supporter

Join Date: Nov 2007
Boat: Beneteau FIRST 42
Posts: 1,836
Re: Anchors - Is One Enough

Quote:
Originally Posted by colemj View Post
Yes, I know that but was making a point using the worse possible case. Regalvanizing just makes that point more so.

However, regalvanizing of something this small isn't always easy to find, some of it is not good, and often times the cost is 50% or more of a new anchor.

And I couldn't find any info on google about regalvanizing…

Mark
I just had a conversation with a company in Oakland California about re-galvanizing my anchors.. His quote was any order has a minamum of $125,00 or about somewhere around $6.00 per pound.. He said a 45 lb anchor would be about 3 to 4 pounds.. so He said to get all you have and bring them in.. as its cheeper by the lb........ 4 anchors would have about 20 to 25 lbs X 6 or $150.00 ... not bad for 4 anchors..............
Randyonr3 is offline   Reply With Quote
Old 09-11-2014, 07:12   #72
Registered User
 
rwidman's Avatar

Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 4,669
Re: Anchors - Is One Enough

You can buy spray galvanizing paint at the home center. It won't hold up like hot dip galvanizing but You can clean off the rust and spray the anchor from time to time.
__________________
Ron
HIGH COTTON
Sent from my laptop using Windows 7
rwidman is offline   Reply With Quote
Old 09-11-2014, 07:13   #73
Registered User

Join Date: Feb 2013
Location: Rio Dulce, Guatemala
Boat: Seafarer36c
Posts: 4,991
Re: Anchors - Is One Enough

Quote:
Originally Posted by Randyonr3 View Post
I just had a conversation with a company in Oakland California about re-galvanizing my anchors.. His quote was any order has a minamum of $125,00 or about somewhere around $6.00 per pound.. He said a 45 lb anchor would be about 3 to 4 pounds.. so He said to get all you have and bring them in.. as its cheeper by the lb........ 4 anchors would have about 20 to 25 lbs X 6 or $150.00 ... not bad for 4 anchors..............
I had our anchor done there. They must use a light load in their G process as it started to wear off pretty soon. From my experience with that shop, I would want to know what I was going to get before I ever did an anchor anywhere again. It was almost a waste of money as the original G was not that that bad compared to their re-G after a year.
From what I understand, you want something like a #90 or a 60 coating at least. A #90 will heal the bare spots for some time.
Ecos is online now   Reply With Quote
Old 09-11-2014, 07:49   #74
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,089
Images: 12
Re: Anchors - Is One Enough

Most of the galvanizing being done in the US now is pretty poor compared to that in the past. Environmental regulations changed their processes.

Shipping our anchor to Oakland from Panama would add a bit to the cost…

Just to be clear, we don't currently need regalvanization. Just the very tip is rusty. I cleaned that up to shiny metal, sprayed it with galvanizing paint, and it lasted two anchorings in sand before the paint was removed.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 14-11-2014, 14:33   #75
Registered User
 
Opie91's Avatar

Join Date: Apr 2009
Location: CT
Boat: C&C 34
Posts: 880
Re: Anchors - Is One Enough

Hey Defender has a few 25 lbs "Stainless" Manson Supreme anchors in their clearance section for under $500 if you need the magic!

Manson Supreme Stainless Steel Anchor - 25 Lbs - Matte Finish
__________________

Opie91 is offline   Reply With Quote
Reply

Tags
anchor

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
'Enough is Enough!' . . . Yeah ! Right ! JustThinking Meets & Greets 22 21-02-2016 22:18
For Sale: Anchors , Anchors and More Anchors MermaidLil Classifieds Archive 11 19-01-2012 09:28
When is Near Enough Good Enough? genomic Construction, Maintenance & Refit 22 03-04-2011 02:36
Enough's Enough - I Can't Stand No More Charlie Sailor Logs & Cruising Plans 10 16-06-2009 08:44
SLEEP, enough or not enough?? shadow Off Topic Forum 22 17-04-2008 06:29



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 11:07.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.