The yards had been previously slung in chains, stoppers prepared for the rigging, and preventer braces rove.
preventer—A rope used to prevent the straining or breaking of a spar or sail.
preventer stays: Additional ropes set up taut to prevent spars carrying away when a vessel is under a press of canvas.
It was formerly a custom to fit two bobstays, a regular one and a smaller one, called a preventer.
The veriest tyro in physiology should know that the gastric juice is itself a preventer of putrefaction.
Through the preventer stern-post, reeve guys, and at the fore part of them fix tackles, and then put the machine overboard.
A ship hove-to with preventer tackles on the rudder-head is unmanageable.
The only safeguard lies in rigging a preventer stay that will set up with a tackle, the fall leading inboard.
Breck tells us that his dope was planned to be a counter-irritant after being bitten as well as a preventer of bites.