Star-pattern Anchor System. Does it work? How to do it? - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 40 Old 08-12-2008 Thread Starter
Glad I found Sailnet
 
Bene505's Avatar
 
Join Date: Jul 2008
Posts: 3,816
Thanks: 14
Thanked 51 Times in 50 Posts
Rep Power: 8
   
Star-pattern Anchor System. Does it work? How to do it?

I have a new (to me) Beneteau 505. I'm planning to make my own mooring out of Danforth or plow anchors arrayed out in a star pattern, and then connected to a central chain. This technique is mentioned in Chapmans as withstanding a hurricane when most (all?) other boats with mushroom anchors were thrown up on land.

Does anyone have any experience with this type of anchoring system?
Bene505 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 40 Old 08-12-2008
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're talking about a three-anchor mooring. It is heavily discussed in many of the books on anchoring technique. I would probably not use plows, but would use oversized Danforths instead, as they have much greater holding power if they don't have to resist a directional shift. However, it also depends a lot on what the bottom is made of.

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 40 Old 08-12-2008 Thread Starter
Glad I found Sailnet
 
Bene505's Avatar
 
Join Date: Jul 2008
Posts: 3,816
Thanks: 14
Thanked 51 Times in 50 Posts
Rep Power: 8
   
I'll have to check the bottom to find out what it is.

I was thinking of using 3 to 5 anchors of 45 pounds each. Not sure if that's enough for a Beneteau 505. I'm trying to be cost effective without jeopardizing the sailboat. And the next anchor size up is really expensive. I have 500 feet of used chain that I bought - not the heaviest chain, mind you -- so having more (smaller) anchors would be more cost effective than having to go with heavier anchors and then buying new, heavier chain. If there's a hurricane on the way (and in Long Island we usually get several days warning), I'll probably pull the boat out. She's on a lake that's 3 miles long and 10 feet deep, and is very exposed to the wind right off the ocean.
Bene505 is offline  
Quote Quick Reply Share with Facebook
post #4 of 40 Old 08-12-2008
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
         
45 lb. anchors are pretty small for a boat of that size, even if you're using three of them. More than three really doesn't make much sense, since you'll have to make the setup overly complicated.

If this is for a storm mooring, you really want the largest anchors you can get—and more small ones don't make any real sense... each of the individual anchors should be sufficient to hold the boat on their own...

I have a 28' trimaran and I'm using a 33 lb. anchor as my primary, and a 45 lb. anchor isn't all that much bigger and your boat is significantly bigger, heavier and with much greater windage than my boat.

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 #5 of 40 Old 08-12-2008
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,826
Thanks: 19
Thanked 213 Times in 162 Posts
Rep Power: 16
       
Check..

Check the local ordinances. Many towns/municipalities are now mandating certain types of moorings for their harbors.

There is not much better than a big mushroom in soft mud or a Pyramid mooring. In a harder bottom a large diameter flat piece of granite is great. Again if you have a soft bottom I would use a mushroom or pyramid.

Mine is buried so deep that the chain creates a funnel to the mushrooms eye and shackle that is about 3 feet deep. The head of my mushroom is about 6-7 feet below the surface of the bottom...

You can't always believe what you read in Chapman's because they rarely give you the full story. With moorings you need the right set up for the right bottom. A 50 footer, in my local harbor in Maine, would require a minimum of a 500 pound mushroom. Our local mooring guys however won't install much less than a 600-800 pounder for a 50 footer as the 500 pounds is the bare minimum.

Just so you have an idea of what you'll need for a permanent mooring the picture bellow is the chain and shackle for the mooring set up for my 36 footer!

For a 50'er you'll need a lot more than this. DO NOT skimp on your mooring set up!! 45 pound anchors on a 50 footer is like trying to fit Rosie O'Donnell into a size 1 bathing suit then sending her out in public!


______
-Maine Sail / CS-36T


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




© Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
Quote Quick Reply Share with Facebook
post #6 of 40 Old 08-12-2008
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
         
Ummm...thanks for that really disturbing image Halekai... have to go get the Psychlorox.

Quote:
For a 50'er you'll need a lot more than this. DO NOT skimp on your mooring set up!! 45 pound anchors on a 50 footer is like trying to fit Rosie O'Donnell into a size 1 bathing suit then sending her out in public!

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 #7 of 40 Old 08-12-2008
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,826
Thanks: 19
Thanked 213 Times in 162 Posts
Rep Power: 16
       
Quote:
Originally Posted by sailingdog View Post
Ummm...thanks for that really disturbing image Halekai... have to go get the Psychlorox.
Sorry but the thought of a 50'er on a 45 pound anchor seemed like seeing Rosie squeezed into a size 1... Not appropriate!

______
-Maine Sail / CS-36T


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




© Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
Quote Quick Reply Share with Facebook
post #8 of 40 Old 08-12-2008
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
         
LOL... very true, but gotta wonder why you thought of that particularly disturbing analogy.

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 #9 of 40 Old 08-13-2008 Thread Starter
Glad I found Sailnet
 
Bene505's Avatar
 
Join Date: Jul 2008
Posts: 3,816
Thanks: 14
Thanked 51 Times in 50 Posts
Rep Power: 8
   
Thanks for the replies. Not sure what psyclorox is but get me some too.

The main thing is for her to stay put. If I have to buy new chain and more expensive anchors, then so be it. (And I'll have to check the ordances too. Didn't think of that.)

Halekai's chain looks a tad like overkill. I'm thinking to balance the tension strenght of the chain with the tension strenght of the anchors.
Bene505 is offline  
Quote Quick Reply Share with Facebook
post #10 of 40 Old 08-13-2008
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
         
Overkill is really good on a mooring, since the chain isn't inspected for rust, damage and such all that often.

BTW, Psychlorox is mental bleach and used for getting things out of your head—like the image of Rosie O'Donnell in a bikini


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
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
vhf no work maestro Gear & Maintenance 1 07-14-2004 07:42 AM
Interior work sneuman Gear & Maintenance 2 01-02-2004 02:16 PM
learning to work on engines? jbarros Gear & Maintenance 5 01-21-2003 04:48 PM
Trade work for boatsit in SF Bay Spring 2002 kunyefish General Discussion (sailing related) 0 11-12-2001 05:29 AM
North Star 727 brioooon Boat Review and Purchase Forum 1 04-12-2001 03:02 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