Anchor Chain - Grade 70 - SailNet Community
 
LinkBack Thread Tools
post #1 of 8 Old 05-11-2009 Thread Starter
Member
 
Join Date: May 2008
Posts: 73
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
 
Anchor Chain - Grade 70

I can get a good price on G70 chain, but its not galvanized, it only comes in satan finish or Dichromate (gold) plated.

Is this a major factor? Is hot-dipped galvanized or SS needed for a good anchor chain?

Last edited by Freerider; 05-11-2009 at 10:31 PM.
Freerider is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 8 Old 05-11-2009
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
You really want hot dipped galvanized chain for an anchor. Also, if you have a windlass, you need to get whatever chain the gypsy on it is designed for.

Do not use stainless steel anchor chain. Stainless steel is subject to crevice corrosion and other issues, and the welds on it can fail suddenly under load in a marine environment.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #3 of 8 Old 05-11-2009
Anchorsmith
 
Craig Smith's Avatar
 
Join Date: Jun 2006
Posts: 253
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 10
 
Arrow

G70 is not high enough to get away without galvanizing, and it is possible to obtain hot-dipped high tensile. It's often branded as "transport" chain in the US, don't know where you are. The galvanizing reduces the tensile strength a little, which is factored into the WLL figures.

As SD implies, you will also require calibrated chain if it's to be used on a windlass gypsy, it doesn't sound like the finishes you mention are likely to be.

High tensile is a good idea as it allows a considerable amount of weight to be saved from the bow of the boat.

There is more info on grades and sizing for anchor chain here, it's an attempt at a fairly complete guide to selecting chain for anchor rode:
Chain (Rocna Knowledge Base)

Craig Smith

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Sailnet Disclosure: Craig is the son of the designer of Rocna and has a financial interest in its success.

Last edited by Craig Smith; 05-11-2009 at 10:14 PM.
Craig Smith is offline  
Quote Quick Reply Share with Facebook
post #4 of 8 Old 05-13-2009
Crealock 37
 
sailak's Avatar
 
Join Date: Apr 2007
Location: Alaska
Posts: 586
Thanks: 17
Thanked 19 Times in 19 Posts
Rep Power: 9
 
Speaking of weight, where can I find how much 5/16 HT chain weighs per foot? Google hasn't provided me a source.

Thanks.

Dale

S/V Elnora
Pacific Seacraft "Crealock" 37 #312

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sailak is offline  
Quote Quick Reply Share with Facebook
post #5 of 8 Old 05-13-2009
Anchorsmith
 
Craig Smith's Avatar
 
Join Date: Jun 2006
Posts: 253
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 10
 
It is in the table on the page linked to directly above your post.

Craig Smith

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Sailnet Disclosure: Craig is the son of the designer of Rocna and has a financial interest in its success.
Craig Smith is offline  
Quote Quick Reply Share with Facebook
post #6 of 8 Old 05-13-2009
Crealock 37
 
sailak's Avatar
 
Join Date: Apr 2007
Location: Alaska
Posts: 586
Thanks: 17
Thanked 19 Times in 19 Posts
Rep Power: 9
 
Oh.

Dale

S/V Elnora
Pacific Seacraft "Crealock" 37 #312

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sailak is offline  
Quote Quick Reply Share with Facebook
post #7 of 8 Old 05-13-2009
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
One thing about the High-test grades of chain, like G43 and G70, you have to examine the links for distortion if the chain is ever exposed to very high stresses...the links can deform and fail rather suddenly when loaded a second time. While this is true of all chain, it is particularly applicable to high-test chain.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #8 of 8 Old 05-13-2009
Tundra Down
 
downeast450's Avatar
 
Join Date: Jan 2008
Location: Seal Harbor, Maine
Posts: 1,274
Thanks: 50
Thanked 21 Times in 20 Posts
Rep Power: 8
 
I ran into the problem of buying lighter weight high tensile anchor chain only to "discover" that the reduced size, and weight, of the chain would only allow shackles to fit that were much weaker than the high tensile chain's rating.
downeast450 is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Marine Grade Plywood and Lumber kram General Discussion (sailing related) 7 09-22-2012 03:20 PM
Foam vs. wool for buffing, waxing, etc. drlove Gear & Maintenance 12 08-26-2012 04:44 PM
How can I tell my plywood is Marine Grade? jabo55 Sailboat Design and Construction 6 06-16-2009 05:58 PM
Spain. The Trofeo SAR Princesa Sofia on target for ISAF Grade 1 @ BYM Sailing News NewsReader News Feeds 0 04-15-2006 06:15 PM
Marine Grade Plywood? Vastbinder General Discussion (sailing related) 42 07-13-2005 08:37 AM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome