Preventer

a control line from the boom to the toerail used to prevent unexpected gybes

Preventer

A preventer, or jibe-guard, is a mechanical device on a sailing vessel which limits the boom`s ability to swing unexpectedly across the boat due to an unplanned accidental jibe. During an unplanned accidental jibe (or gybe), neither the crew nor the boat is set up properly to execute a planned jibe. As a result the uncontrolled boom will swing ac....
Found on http://en.wikipedia.org/wiki/Preventer

Preventer

• (n.) An auxiliary rope to strengthen a mast. • (n.) One who prevents or obstructs; a hinderer; that which hinders; as, a preventer of evils or of disease. • (n.) One who goes before; one who forestalls or anticipates another.
Found on http://thinkexist.com/dictionary/meaning/preventer/

Preventer

(Gybe preventer, Jibe preventer) A sail control line originating at some point on the boom leading to a fixed point on the boat's deck or rail (usually a cleat or pad eye) used to prevent or moderate the effects of an accidental jibe.
Found on http://www.translationdirectory.com/glossaries/glossary101.htm

Preventer

Pre·vent'er noun 1. One who goes before; one who forestalls or anticipates another. [ Obsolete] Bacon. 2. One who prevents or obstructs; a hinderer; that which hinders; as, a preventer of evils or of disease. 3. (Nautical) An auxiliary rope to strengthen...
Found on http://www.encyclo.co.uk/webster/P/159

preventer

A line set up to hold the boom in position and prevent an accidental jibe.
Found on http://www.diy-wood-boat.com/Boating-terms.html

Preventer

Chains attached to the hull and rudder to prevent a heavy sea from sweeping it away.
Found on http://shipwrightjournal.blogspot.co.uk/p/glossary-of-nautical-terms.html
No exact match found