sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery

 

Sail-World.com : Permanently Installed Preventer - The Case For

Permanently Installed Preventer - The Case For

'After an accidental jibe, by Francisco Ferri'    .
The incidence of injury from accidental or premature jibes is unknown but the problem is not insignificant. (I became aware of the immediacy and seriousness of such accidents during the 1989 Marion Bermuda Race when a pediatrician at the helm of a fellow neurosurgeon’s boat had a fatal head injury during an accidental jibe at night. He was struck by the mainsheet as it whipped across the cockpit. The binnacle was also badly damaged by the mainsheet.

Subsequently I assembled an incomplete list of 18 fatal head and/or neck injuries that occurred on 'offshore' yachts during accidental jibes. A surprising number occurred in various racing venues, as follows.

Racing Venues with Well Documented Fatal Jibe Head Injuries
1979 SORC boom injury
1981 Practice - USCG Academy Sailing Team boom injury
1989 Marion Bermuda Race mainsheet injury
1992 Cowe’s Week mainsheet injury
1996 Antigua Race Week mainsheet injury
1998 Ft. Lauderdale-Key West Race boom injury
2007 Atlantic Rally for Cruisers (ARC) boom or mainsheet injury

In addition, in 1990 a midshipman at the US Naval Academy was in coma after a head injury during an accidental jibe and his recovery was not good enough to return to school.

Accidental jibes can be avoided only if a preventer is always in place. Phil Garland, of Hall Rigging, designed a permanently installed preventer that we have used with ease on our Morris 46 in four Newport Bermuda Races and 2 roundtrip transatlantic passages.

A Permanently-Installed Preventer (designed by Phil Garland)

A. Equipment
a. A pad-eye or bail on the undersurface of the boom, aft of the vang (about 1/3rd the distance from the gooseneck to the boom end, but the exact location is not critical)
b. Two blocks on the deck, one on each side, located in the vicinity of the shrouds (will vary with the boat)
c. Two line stoppers, one each side, located by the cockpit in easy reach of the helmsman
d. Two lines long enough (about half the length of the boom plus the distance from the deck block to the line stopper, plus several extra feet)
Permanent preventer diagram side view -  .. .  


B. Set-Up
a. Both preventer lines start at the pad eye or bail on the boom, one running forward to the block and then aft to the line stopper on the starboard side, the other running similarly on the port side.
b. On our Morris 46, a piece of PVC tubing on the aft lower shroud prevents line chafe.
Permanent preventer diagram from above -  .. .  


C. Operation
a. The entire system can be run by the helmsman: releasing the old leeward line from the stopper before or during the jibe and tightening the line in the stopper on the other side after the jibe.
b. The helmsman can also trim the line as the mainsheet is let out or taken in.
c. Occasionally, one of the lines hangs up on a Dorade.
d. Upwind both lines are slack and do not need attention.
e. The initial force of the jibe is minor compared to the full force of the jibe after the accelerating boom has crossed the centerline.
Permanent preventer in place -  .. .  


Above and below: Preventer lines set-up on a Morris 46 (DIVA)

Permanent preventer attached -  .. .  



Dr Fischer is Fleet Surgeon for the Cruising Club of America




by Edwin G. Fischer, MD

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=40976

3:22 AM Fri 18 Jan 2008 GMT






Click here for printer friendly version
Click here to send us feedback or comments about this story.


News - USA and the World

420 World Championship - Singapore and Spain out front by 420 International Class Association,






























Lightning strikes cut short CFJ Nationals by Andy Kopetzky, Santa Monica Bay


















America's Cup: Group agrees to co-operate in London Meeting by Richard Gladwell/Sail-World.com/nz,












America's Cup: Alameda makes overtures on Venue hosting for San Fran *Feature by Richard Gladwell/Sail-World.com/nz,






Etchells Invitational Cup - Aussies take early lead in Cowes
PWA Fuerteventura Grand Slam - Antoine Albeau strikes back on day 4
Aquece Rio – International Sailing Regatta - All set for test event
ISAF World Sailing Rankings for 28 July 2014
29er World Championship - All set in Kingston
ORC World Championship - Third Course area opens for huge fleet
Day one of the Allen RS Feva World Championships
Anna Tunnicliffe On the Final two days of the Reebok CrossFit Games
Joachim Aschenbrenner takes gold at ISAF Youth Match Race Worlds 2014
Maxi Soh scores double wins in CMRC Summer Doubleheader
29er World Championship opening ceremonies in Confederation Park
PWA Fuerteventura Grand Slam - Action resumes on day 3
Land Rover Sydney Gold Coast Yacht Race Start 2014 VIDEO
Laser Radial Men’s World Championship 2014- Final day
2014 Pacific Cup - Scarlet Runner wins
Gladwell's Line: America's Cup - Joint Statement is a curious note *Feature
ISAF Youth Match Racing World Champ - Top four battle it out for final
BIC Techno 293 Worlds 2014 - Day 6
PWA Fuerteventura Grand Slam - Wind teases competitors on day 2
Women’s Match Race Golfe du Morbihan - Action-packed day of racing
Herreshoff Marine Museum announces successful fundraising campaign   
Brewin Dolphin Commodores' Cup - The most comprehensive victory yet   
Anna Tunnicliffe holds fourth at mid-point of Reebok CrossFit Games   
2014 29er North American Open Championship - Australians win   
INSA Sabot II Invitational Regatta - Erik Hou claims victory   
CMRC Summer Invitational Series - Maxi Soh wins Doubleheader A event   
International Moth World Championships - Nathan Outteridge wins   
International Moth Worlds - Victory for Nathan Outteridge + Video   
PWA Fuerteventura Grand Slam - First blood to Toselli and Angulo   
Melges 24 Nationals - Record entries for 2014 and 2015 venue revealed   
Women’s Match Race Golfe du Morbihan - Anna Kjellberg claims the lead   
Jessica Uniack Memorial Beach to Bay Race at Long Beach YC   
Laser Radial Men’s World Championship - Poland tops the leaderboard   
America's Cup - Four teams confirm full support regardless of venue   
Plastic Classic takes place at Mariposa Hunters Point YC   
Six Metre European Championship - No champion declared for 2014   
J/Teams sail tough Chicago Mackinac Race   
Anna Tunnicliffe wins first event of Reebok Cross Fit Games + Video   
2014 Pacific Cup - Skill and luck required for victory   
Six Metre European Championship - Action resumes on day 4   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW US
LocalAds   DE  ES  FR  IT