At anchor in heavy weather - Page 2 - SailNet Community
Reply
 
LinkBack Thread Tools
post #11 of 11 Old 09-25-2003
Senior Member
 
Join Date: Dec 2002
Posts: 552
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 13
 
At anchor in heavy weather

The "Bosun Supplies" diagram is illustrative, but I take issue with their sizing (length & diameter).
They recommend a rather short snubber, about = to bow freeboard. On my C&C-29, this would be about 4'', which might provide around 6-7" of stretch. I''d prefer more, and use a much longer (50'') snubber; normally deploying about 10-15''. This allows about 24" of stretch. I''d deploy the snubber with about 20" of slack chain, so that I expect the chain to take up, prior to the rope breaking (except under the very worst "snatch" loads). When the chain goes taut, the noise & jerk act as a danger - high load alarm.

Bosun also advises that the snubber diameter approximate a rope rode diameter (from their chart); whereas I''d prefer something slightly smaller. I''m ultimately anchored to chain, not the snubber.

An interesting side tale:
Moored to 150'' of 3/8" H.T.chain @ a depth of 24'' - 28'', in the Bahamas, I tied a 5'' length of 1/8" (or 3/16") flag halyard (temporary snubber) to my mooring chain, slacking the chain about 18". The small stuff was well protected against chafe at the fairlead only (nothing @ chain nor cleat).
I forgot about this temporary snubber, and it remained in place, taking all the loading that occurred through about 4 winter months! The mooring was adjacent to Big Rock Cut (Staniel Cay), where the tidal run hits 6 knots; and we endured the normal complement of winter northers etc.
My point: Rope seldom breaks constant under loading - it chafes or abrades, or breaks under shock.
OMO
Gord
GordMay is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

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
How heavy is too heavy II ? PCP General Discussion (sailing related) 14 09-21-2007 09:48 PM
sails well in light air AND heavy weather? jbarros Boat Review and Purchase Forum 0 10-09-2003 10:54 AM
sails well in light air AND heavy weather? jbarros Boat Review and Purchase Forum 0 10-09-2003 10:53 AM
Noaa Marine Weather Images Ocean-Pro Cruising & Liveaboard Forum 1 01-04-2002 06:14 AM
Nauticat In Heavy Weather Konstanz Boat Review and Purchase Forum 0 10-18-2001 07:15 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