Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-12-2015, 10:06   #1
Registered User

Join Date: Dec 2015
Posts: 9
Beam Reach Safe sailing Rough Weather

Hi I own a heavy displacement 25ft sailboat...I have come across and read quite frequently that it is dangerous to sail with waves on the beam when the waves are of a certain size (breaking wave whose height is greater than the yacht's beam) ...as theortically it can capsize the boat however does this also apply to sailing boats with action of sails and ballast or just ordinary boats.. as i believe i have seen many yachts continue on in such conditions?
Cheers
Ed
__________________

__________________
thedude0 is offline   Reply With Quote
Old 17-12-2015, 16:49   #2
Senior Cruiser
 
s/v Beth's Avatar

Cruisers Forum Supporter

Join Date: Oct 2008
Location: Coos Bay, Oregon
Boat: Valiant 40 (1975)
Posts: 4,066
Re: Beam Reach Safe sailing Rough Weather

Ed, the key is breaking waves at that height. If you have a breaking wave hit you at beam the force tries to turn you over, and your boat's righting forces try to combat it. IMHO it is rare to see breaking waves at 10-12 feet high, and you should not be out in them.
If the boats continue in breaking waves that would capsize them, they are either stupid, or very good. I hope I am not the first, and probably not the second.
__________________

__________________
s/v Beth is offline   Reply With Quote
Old 17-12-2015, 17:46   #3
Long Range Cruiser
 
MarkJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,828
Images: 25
Re: Beam Reach Safe sailing Rough Weather

Ed a breaking wave does not mean a white cap. It means a wave breaking at sea as it would breaking on a beach.
You only get them in extremely bad storms.
For general sailing just plow through the white caps. They may push the boat about a bit but they won't hurt.

For extreme breaking waves, yes you are right, you don't want to be beam onto them, either be going up them or down them. Preferably under a drogue or a parachute anchor.

Mark
__________________
Notes on a Circumnavigation.
OurLifeAtSea.com

Somalia Pirates and our Convoy
MarkJ is offline   Reply With Quote
Old 17-12-2015, 17:51   #4
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,032
Re: Beam Reach Safe sailing Rough Weather

Wave height is also measured from the back of a wave, so a three ft wave looks like a five


Sent from my iPad Pro using Cruisers Sailing Forum
__________________
a64pilot is offline   Reply With Quote
Old 18-12-2015, 05:37   #5
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,573
Images: 240
Re: Beam Reach Safe sailing Rough Weather

Greetings and welcome aboard the CF, Ed.
__________________
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 18-12-2015, 05:53   #6
Registered User

Join Date: Dec 2015
Posts: 9
Re: Beam Reach Safe sailing Rough Weather

Thank you all for such great responses really Appreciated and thanks for welcome!! Ed
__________________
thedude0 is offline   Reply With Quote
Old 18-12-2015, 09:42   #7
Registered User

Join Date: Aug 2015
Posts: 112
Re: Beam Reach Safe sailing Rough Weather

I thought the height to beam ratio was applied to multihulls and not monohulls, but could be wrong. I think if the monohull was like a fishing boat (no ballast keel) then this would indeed apply but not if there is a ballast keel in the equation. Personally if I got caught out, was beam reaching and had waves breaking over the boat, I might want to reconsider......
__________________
out42 is offline   Reply With Quote
Old 18-12-2015, 10:19   #8
Senior Cruiser
 
seasick's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: Bend, OR
Boat: Brewer designed Pacific 43 in fiberglass. Center cockpit set up for long-distance single handing.
Posts: 428
Re: Beam Reach Safe sailing Rough Weather

In extreme conditions such as you describe, beam-to may be considered in many instances to be the safest yet the least comfortable angle to the onslaught.

Laying a hull is the natural inclination for a vessel that is left to its own devises, I.e. No sail on, rudder tied off.

The reality of this beam-on situation is that as the vessel climbs the beam-on wave, it heals a great deal away from the breaking wave which allows the force of the breaker to predominantly impact the hull below the waterline where it is strongest. As well, the extreme heeling angle will tend to help empty a filled cockpit and an oblique impact angle to vulnerable things like port lights and Dodgers.
__________________
seasick is offline   Reply With Quote
Old 18-12-2015, 10:29   #9
Registered User

Join Date: Feb 2011
Posts: 2,105
Re: Beam Reach Safe sailing Rough Weather

Beam reach will result in a lot of knock downs(45 degrees from vertical). Really rough on rigging and engine mounts, not to mention tankage and batteries.
Might even go to 90 degrees from vertical if your on top of a wave hitting strong winds. Usually considered dangerous in 45-50 knot winds or higher and 12 to 18 foot seas and higher. Most try for a downwind or lying ahull, assuming sea room. So get out there and make the evening news.
__________________
reed1v is offline   Reply With Quote
Old 18-12-2015, 10:48   #10
Senior Cruiser
 
s/v Beth's Avatar

Cruisers Forum Supporter

Join Date: Oct 2008
Location: Coos Bay, Oregon
Boat: Valiant 40 (1975)
Posts: 4,066
Re: Beam Reach Safe sailing Rough Weather

I would look and Lin and Larry's tome on the subject. They discuss beam to vs heaving to
http://www.amazon.com/gp/product/192...ZG0YMTR6M7MV8A
If you are in a small, heavy displacement monohull and are going to be out in these waters, it may be the best 20 bucks you ever spend.
__________________
s/v Beth is offline   Reply With Quote
Old 18-12-2015, 10:58   #11
Registered User

Join Date: Oct 2011
Location: Winthrop, MA
Boat: Tayana 37
Posts: 158
Re: Beam Reach Safe sailing Rough Weather

+1 on Lin and Larry Pardey's book. They make a convincing case for heaving-to, with the bow somewhere around 40-50deg from the wind (and presumably the dominant waves).

Their book is lucid and very readable. Like s/v Beth said: excellent use of $20


Sent from my iPhone using Cruisers Sailing Forum
__________________
Tailwheel is online now   Reply With Quote
Old 18-12-2015, 11:29   #12
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 6,053
Re: Beam Reach Safe sailing Rough Weather

Quote:
Originally Posted by thedude0 View Post
Hi I own a heavy displacement 25ft sailboat...I have come across and read quite frequently that it is dangerous to sail with waves on the beam when the waves are of a certain size (breaking wave whose height is greater than the yacht's beam) ...as theortically it can capsize the boat however does this also apply to sailing boats with action of sails and ballast or just ordinary boats.. as i believe i have seen many yachts continue on in such conditions?
Cheers
Ed
Heavy displacement is a subjective term. Use common sense, if it gets the least bit snotty, get out of the trough even if you need to go far out of your way.
__________________
Cadence is offline   Reply With Quote
Old 18-12-2015, 13:50   #13
Registered User

Join Date: Jul 2010
Location: Gold Coast
Boat: Van de Stadt Pioneer 930-9.3m
Posts: 28
Re: Beam Reach Safe sailing Rough Weather

I would never consider going out in such conditions but on a couple of occasions have been caught out by change in weather. You soon learn which is the most comfortable direction to sail and what you need to do to be safe purely from experience and yes you may have to travel out of your way to achieve this.
__________________
Tibor is offline   Reply With Quote
Old 18-12-2015, 14:01   #14
Registered User
 
Reefmagnet's Avatar

Join Date: May 2008
Location: puɐןsuǝǝnb 'ʎɐʞɔɐɯ
Boat: Nantucket Island 33
Posts: 2,735
Re: Beam Reach Safe sailing Rough Weather

Breaking waves of sufficient size can roll any boat beam side on. Wind against tide can create steep non breaking waves that will lay a boat on it's side although they shouldn't be capable of rolling it completely over unless extreme in size. If this is the case heaving to is the best option.

Sent from my SGP521 using Cruisers Sailing Forum mobile app
__________________
Reefmagnet is offline   Reply With Quote
Old 18-12-2015, 14:15   #15
Registered User
 
Juho's Avatar

Join Date: Apr 2015
Location: Finland
Boat: Nauticat 32
Posts: 716
Re: Beam Reach Safe sailing Rough Weather

I think MarkJ already said what I wanted to say.

If possible, you should not be out there with the large breaking waves (foam on top of a wave is not yet a breaking wave). If you are there, then don't turn your beam to the breaking waves. If you are there, you could heave to, use a drogue or use a sea anchor.
__________________

__________________
Juho is offline   Reply With Quote
Reply

Tags
sail, sailing, weather

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
Wide Beam vs Narrow Beam Srah 1953 Monohull Sailboats 104 08-12-2016 19:59
Flapping sail near top of mast on a beam reach simonpickard Deck hardware: Rigging, Sails & Hoisting 9 17-01-2015 16:35
Excessive Weather Helm Even on Reach stevensuf Monohull Sailboats 50 25-04-2013 09:50
Bad Weather and Rough Water Ė Part 1 Mariners Commercial Posts 0 29-09-2011 08:24



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:02.


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.