Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 27-03-2011, 07:44   #1
Registered User
 
petem1's Avatar

Join Date: Mar 2011
Location: On the water
Boat: 43' Tartan
Posts: 3
Anchor Rodes & Windlasses

We are beginning our full time cruising in 5 weeks ob our 43' Tartan going form Lake Michigan to the Caribbean. I am confused about anchor rodes and windlasses. We have a Lewmar V4 with 70' of 3/8 G4 and 250' of 5/8 nylon with a 44lb Rocna at the end.
I want to go to all chain and the best I can tell this Windlass, although one size larger than the standard for this boat, is not powerful enough? It has a SWL of 688# and maximum pull of 2700#. I am under the understanding that I can only have a rode/anchor weight of 1/4 of the SWL.
Can somebody with real experience help clarify this.
Safe journies.

Pete
__________________

__________________
petem1 is offline   Reply With Quote
Old 27-03-2011, 08:14   #2
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,580
Images: 240
Re: Anchor Rodes & Windlasses

Greetings and welcome aboard the CF, Pete.

The maximum pulling power required is equal to the weight of your anchor & rode.
To allow for prolonged operation, pulling power is multiplied by 4 to get SWL.
Accordingly, a “V4" Windlass, with a 2700 Lb MAXIMUM pulling power, has a Safe Working Load of 675 Lbs (weight of anchor + rode).

See the Lewmar Windlass Selection Guide
http://www.lewmar.com/cms/assets/1/c...tion_guide.pdf
__________________

__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 27-03-2011, 08:33   #3
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jul 2006
Location: Chesapeake Region and Maine
Boat: 42' Bob Perry sloop
Posts: 4,038
Images: 4
Re: Anchor Rodes & Windlasses

The V4 should be fine, if you use it correctly.

Correctly means:

1. Use the windlass ONLY to lower and raise the anchor;
2. DO NOT use the windlass to break out the anchor;
3. DO NOT use the windlass to pull the boat up to the anchor in a headwind; and
4. DO NOT use the windlass to secure the chain to the boat; use a proper bridle and a chain stopper.

Remember that although you will carry 200' of G4 chain (just as I do), you'll never be lifting all that at one time. At most, you'll be lifting a chain length equal to the water depth plus, when you break out the anchor (with the engine, not the windlass), the weight of the anchor itself -- less whatever buoyancy the anchor and chain have in seawater.

BTW, the Lewmar Deluxe 3/8" chain stopper is TOO SMALL to allow free passage of 3/8" chain without jamming -- they've admitted their dimensions are wrong and are supposedly re-tooling it. The 1/2" model is massively larger, and works very well with 3/8" chain. Ask me how I know :-)

http://wdsg.com/gallery/main.php?g2_...geViewsIndex=1

Bill
__________________
btrayfors is offline   Reply With Quote
Old 27-03-2011, 08:49   #4
Registered User
 
Unicorn Dreams's Avatar

Join Date: Aug 2007
Location: Clear Lake Marine Services - Seabrook, Texas
Boat: Gulfstar, Mark II Ketch, 43'
Posts: 2,359
Re: Anchor Rodes & Windlasses

As quoted above, the only actual weight the windlass should actually be picking if used correctly, is about 110 lbs. The 44 lbs of anchor plus at the most 60 lbs of chain equal to 30' of water. Anchoring in the Carribean is shallower than that 99% of the time...
__________________
Formerly Santana
The winds blow true,The skies stay blue,
Everyday is a good day for SAILING!!!!
Unicorn Dreams is offline   Reply With Quote
Old 27-03-2011, 09:41   #5
Registered User
 
Delfin's Avatar

Join Date: Aug 2010
Location: Anacortes, WA
Boat: 55' Romsdal
Posts: 1,390
Re: Anchor Rodes & Windlasses

You're fine with the V4. 320' of chain, if you go that route, will weigh about 500#, so theoretically you could put a 175# anchor at the end of it and still be within the SWL limits of the device.

Of more concern is the effect of 550# on your bow. Before switching to all chain, perhaps place the additional 350# you'll be adding by asking Rosanne Barr to stand on the bow, or perhaps 2 other people of about that weight. See how you sit, then consider where to put the offsetting load in the stern if it looks like you need that.
__________________
http://delfin.talkspot.com
When stupidity is a sufficient explanation, there is no need to appeal to another cause.
- Ulmann's Razor
Delfin is offline   Reply With Quote
Old 27-03-2011, 09:46   #6
Registered User
 
Unicorn Dreams's Avatar

Join Date: Aug 2007
Location: Clear Lake Marine Services - Seabrook, Texas
Boat: Gulfstar, Mark II Ketch, 43'
Posts: 2,359
Re: Anchor Rodes & Windlasses

Roseanne would have togo on a diet, or rudder would ba out of the water.
__________________
Formerly Santana
The winds blow true,The skies stay blue,
Everyday is a good day for SAILING!!!!
Unicorn Dreams is offline   Reply With Quote
Old 27-03-2011, 10:04   #7
CF Adviser
 
Bash's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: sausalito
Boat: 14 meter sloop
Posts: 7,260
Re: Anchor Rodes & Windlasses

Last summer I used that very winch on that very boat during a one-week cruise in the San Juan islands. It was certainly adequate, but was not impressive other than for the retrieval speed. It's far faster than my Lewman horizontal windlass, but also significantly less powerful.

The V4 had been factory installed by Tartan, and they did a lousy job with connectors and connections. I had to go back through the whole system one afternoon while on the hook to bring it up to cruising standards. I could only conclude that no one at the Tartan factory owned a soldering iron or knew how to use loctite, et cetera.

The boat was 3 years old.
__________________
cruising is entirely about showing up--in boat shoes.
Bash is offline   Reply With Quote
Old 27-03-2011, 15:10   #8
Registered User

Join Date: Jul 2008
Location: Boston, MA
Boat: Bristol 38.8
Posts: 1,625
Re: Anchor Rodes & Windlasses

Do you really want to go all chain? 3/8 inch galvanized is roughly 1.4 lb per foot, so you will be adding 300+ pounds to the bow of your boat.

And for what? How much better will the all-chain rode hold than the 70 ft. of chain you have now? Plus you have to mess with snubbers. You aren't planning to tackle New South Georgia or the Chilean canals, are you?

If your nylon rode is 3 ply, I'd suggest replacing it with octoplait and letting it go at that.
__________________

__________________
Curmudgeon is offline   Reply With Quote
Reply

Tags
anchor

Thread Tools
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
Two Individual Windlasses on the Bow, or a Dual Windlass Unit ? Ocean Roads Anchoring & Mooring 5 15-10-2010 15:00
Weaving Back & Forth at Anchor nelson.peter Anchoring & Mooring 72 24-06-2010 01:13
Need a Windlasses? niteflite1287 Dollars & Cents 1 14-01-2009 11:40
Anchor chain & rode bottleinamessage Classifieds Archive 2 11-09-2007 08:54
Anchor Snubbers & Bridles GordMay Seamanship & Boat Handling 2 31-08-2007 07:49



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:43.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.