Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-13-2019, 09:36 PM   #1
Veteran Member
 
woodscrew's Avatar
 
City: Barnegat Light
Country: USA
Vessel Name: Northern Star
Vessel Model: Bristol 42 1970
Join Date: Feb 2016
Posts: 60
steadying sail?

I am planning on adding a boom and steadying sail to the mast on my Bristol 42 trawler. I installed the mast with this in mind so it is rigged appropriately. I hope to get two things from this sail. It should help the boat weather cock at anchor (although it tacks way less since I switched to all chain). Mainly I hope it will help reduce the roll. The sail will be about 75 sq ft, and the mast steps on the flying bridge, mast head height of 22'6", so it is fairly high up and far aft, where I imagine it will have the most effect on both roll and weather cocking.Anybody have one on their boat? I've heard opinions ranging from it's great to don't waste your time. Thanks in advance, Woodscrew
__________________
Advertisement

woodscrew is offline   Reply With Quote
Old 12-14-2019, 12:05 AM   #2
Master and Commander
 
markpierce's Avatar
 
City: Vallejo CA
Country: USA
Vessel Name: Carquinez Coot
Vessel Model: penultimate Seahorse Marine Coot hull #6
Join Date: Sep 2010
Posts: 11,554
I don't believe 75 square feet will be a great help.
Attached Thumbnails
Click image for larger version

Name:	IMG_1016.jpg
Views:	41
Size:	79.2 KB
ID:	97510  
__________________

__________________
Kar-KEEN-ez Koot
markpierce is offline   Reply With Quote
Old 12-14-2019, 05:20 AM   #3
Senior Member
 
mvweebles's Avatar
 
City: Saint Petersburg
Country: United States
Vessel Name: Weebles
Vessel Model: 1970 Willard 36 Trawler
Join Date: Mar 2019
Posts: 404
Many Willards carry a sail of approximately that relative size. I've had both a W36 and a W30 which both had sails. I found them to be of little value - some minor roll attenuation if there's a half a hurricane on the beam. A few owners are more enthusiastic. Most are not.

My W36 also came with a twin head sail setup which was not really practical and was never set. Unlikely many trawlers have a strong enough mast to support a sail of adequate size.

I'm also skeptical of benefit of riding sails. Assumption is a boat will point up into the wind like a weather vane. It doesn't. If left to its own, it will lie broadside. A riding sail may effect that a little, but not significantly. Does it really make a difference if the boats natural attitude is 90- degrees to the wind or 70-degrees?
__________________
M/V Weebles
1970 Willard 36 Sedan Trawler
Current Location: Ensenada MX
mvweebles is offline   Reply With Quote
Old 12-14-2019, 06:27 AM   #4
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 19,923
If you are willing to do the effort of a mast , perhaps a paravane setup would be worth the effort?
FF is offline   Reply With Quote
Old 12-14-2019, 07:44 AM   #5
Guru
 
psneeld's Avatar
 
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,372
Riding sails and steadying sails are different enough that they really aren't good at doing both. A steadying sail should be tall enough to give the neccessary anti rolling force but can't be too far astern without causing corkscrewing, and that's exactly where a riding sail needs to be (as far aft as possible).

A good riding sail doesn't need any wind, its flat shape should provide the rolling resistance without wind. The size and height are the keys to a good riding sail. Most of us will never put a mast on tall enough for a truly great steadying sail. However smaller ones in beam winds do have some effect on some boats reportedly, which has had me consider one too.

I think 75 sq ft would start to be effective.... but would best be taller than long at the boom based on my readings.
psneeld is offline   Reply With Quote
Old 12-15-2019, 05:11 AM   #6
Guru
 
AusCan's Avatar
 
City: Adelaide
Country: Australia
Vessel Name: Kokanee
Vessel Model: Cuddles 30 Pilot House Motor Sailer
Join Date: Jul 2012
Posts: 2,905
I agree with other comments. 75 square feet is nowhere near enough for a 42 foot boat. I have a 200 sq ft mainsail and a 100 sq ft jib on my 30 foot boat and it works very well for a steadying sail. Iíve tried with jib alone and the stabilisation effects are minimal.
AusCan is offline   Reply With Quote
Old 12-15-2019, 09:26 AM   #7
Guru
 
kchace's Avatar
 
City: Brookline, NH
Country: USA
Vessel Name: Blue Heaven
Vessel Model: Albin 43 classic double cabin, twin 135 Lehmans
Join Date: Sep 2013
Posts: 1,698
My "steadying" sail looks great and is about that size, but I couldn't really tell the difference when using it or not.
kchace is offline   Reply With Quote
Old 12-15-2019, 11:58 AM   #8
Guru
 
OldDan1943's Avatar
 
City: Aventura FL
Country: USA
Vessel Name: Kinja
Vessel Model: American Tug 34 #116
Join Date: Oct 2017
Posts: 4,508
Fully batten sail to keep it flat.
No plans to use the boom for lifting 'stuff'?
You might consider a "loose foot sail" aka, no boom.
__________________

__________________
Did Noah have a get home-engine?
OldDan1943 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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





All times are GMT -5. The time now is 11:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×