Anchor and Rode Sizes - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > Contributing Authors > Gear and Maintenance Articles
 Not a Member? 


Closed Thread
 
LinkBack Thread Tools
  #1  
Old 07-17-2002
Contributing Authors
 
Join Date: Jan 2000
Posts: 325
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 15
SailNet is on a distinguished road
Anchor and Rode Sizes

I have a 30-footer that is about 10,400 pounds and I plan to anchor in approximately 20 feet of water. What size and lenth of rope should I carry? At present I have 20 feet of 1/4 chain with 150 feet of 7/16 three-strand line. Is this adequate for the boat?

SailNet responds:
Thanks for your question. We get asked this on a regular basis, so you're not alone in your query. Regarding the dimensions of your anchoring gear, for a boat the size of yours, John Rousmaniere recommends (in his useful tome The Annapolis Book of Seamanship) that you have about 16 feet of quarter-inch chain for your lightest anchor (he says a 12-pound Danforth styled anchor would be a minimum) and 46 feet of quarter-inch chain for your heaviest anchor (he recommends a 35-pound yachtsman). For the same size boat he recommends nothing smaller than 7/16-inch line, so it looks like the gear you have is appropriately sized.

Now, regarding the amount of rode you need for 20 feet of depth, Rousmaniere recommends 7:1 scope for a rope rode and 5:1 for an all-chain rode until the hook is securely dug in, and then a little less only in light to moderate conditions. He says that a lot more rode should be veered out as conditions get rougher.

Rousmaniere cautions that the length of the rode may vary with rode type and anchor type, and of course with how well the anchorage is protected and how crowded it is in a shifting wind. He also reminds us that the most important factor in what type and rode and what kind of scope to use is windage, which is a function mainly of beam. "A lightweight multihull may pull harder than a heavy monohull."

So with your 20 feet of chain and 150 feet of line, you've got plenty of rode to use relative to Mr. Rousmaniere's recommendations. Here's hoping that this helps to answer your question. By the way, you might want to consider getting a copy of Rousmaniere's book. It can be very useful. Best of luck on the water this summer.

Closed Thread


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



All times are GMT -4. The time now is 05:33 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.