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.
Preventer
A line run forward from the boom to a secure fitting to prevent the boom from swinging violently when running.
Prime meridian
The longitude line at 0°, which runs through Greenwich, England.
preventers - Additional ropes, stays, tackles used to prevent spars being carried away if their proper stays give out, as preventer backstays for the topmast, preventer bobstay.
Boom Preventer:
A block and tackle attached to the boom and the deck to prevent the main from gybing when sailing downwind ...
preventer
A line or device that stops a boom from swinging across the boat.
primaries, primary winches ...
Preventer
Additional stay line used to prevent the boom from jibing.
Prop Walk ...
A preventer does not keep the boat from turning across the wind"it only prevents the boom from crossing the boat.
preventer: line and tackle which limits the movement of the boom, usually for the purpose of preventing accidents by preventing being swept overboard in severe conditions. privileged vessel: the ship with the right of way.
PREVENTER - An additional rope placed to assist another one in supporting a strain, e.g., a preventer backstay.
A temporary or " preventer " backstay is used when great pressure is to be met. Seamen have at all times had recourse to special devices to meet particular dangers.
Preventer: A rope used for additional support or for additional securing, e.g., preventer stay.
Pricker: Small marlinespike.
Privileged vessel: One which has the right of way.
Prolonged blast: A blast of from 4 to 6 seconds' duration.
If only you had rigged a preventer. Just a simple line tied to the boom and tied on someplace forward to prevent an accidental jibe.
The topmast preventer backstays should be attended to by live men. When a vessel is not racing, gybing in heavy weather may be accomplished without the slightest risk ; the topsail may be clewed up and the peak of the mainsail lowered, ...
when jibing, the force of the boom's motion can be destructive, injuring the crew and damaging equipment. In strong winds and on large boats this force can dismast the boat and seriously injure crew members hit by the boom. Sometimes a preventer is ...
A harbor or place where vessels enter and leave port hole A hole or window in the side of a boat port tack Sailing with the wind coming from the port side prevailing wind The usual wind direction for an area and season preventer A ...
 See also: Sailing, Boat, Boom, Bow, Line
  
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