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Using a boom vang and preventer can improve both speed and safety at sea.
[SailNet, 7 May 1999]
Looking at boat injury statistics helps us choose essential safety equipment. Rousmaniere talks about how to get the stuff that really works. 4 pages with photos.
[Practical Sailor, 1 October 2004]
Design and instructions for making your own adjustable rigid vang. Even if you are not planning a DIY project, there is good information about how a vang works and what problems it can cause.
[San Juan 23 Internet Fleet, USA]
A rigid boom vang with an internal block-and-tackle system for adjustment.
[Spinlock Ltd., Cowes, Isle of Wight, UK]
A small drum attached under the boom with a line around running from gunwale to gunwale. A much lighter control line to the drum is for friction control. Boomlock One is for boats with mainsail area up to 200 sq. feet; Boomlock Two is for sails up to 600 sq. feet.
[Sailspar, Brightlingsea, Essex, UK]
This equipment slows the boom during a jibe, and acts as a preventer and vang if very tight. Can be tensioned from the cockpit
[Heinson, Turlock, CA, USA]
Allows the boom to be controlled from the cockpit. If an accidental jibe occurs, the brake will dissipate the shock load and keep the boom from flying across.
[Martinus Van Breems, Inc, Norwalk, CT, USA]
Custom-sized aluminum vangs with block-and-tackle adjustment.
[Garhauer Marine Corporation, Upland, CA, USA]
Simple block-and-tackle arrangements that can operate as either vang or preventer, depending on where they lower block assembly is shackled.
[Wichard S.A., Thiers, France]
A spring-loaded mechanical boom vang holds the boom down when sailing and up when the sail is dropped. Eliminates the need for a topping lift.
[Forespar Products Corporation, Rancho Santa Margarita, CA, USA]
Other common ways to go overboard include slipping or being washed through the lifelines or being knocked over by the boom in an accidental jibe.
Lake Michigan Safety Study
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