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.
Calling itself "the alternative to mechanical or rigid vangs," this device will hold the boom level when the sail is lowered, yet permit vanging the sail below that level when sailing.
This equipment slows the boom during a jibe, and acts as a preventer and vang if very tight. Can be tensioned from the cockpit
A combination vang and preventer for small cruisers with a friction control line leading to the cockpit. Hand tension controls the booms speed during a jibe.
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.