Boom vang

A tackle that pulls the boom down and controls leech tension.

How to sign

Use Dominant R-hand: rope classifier. The base or passive hand is Non-dominant 1-hand/flat-B: mast and boom. Set mast and boom. Start the taut rope at the boom. Trace diagonally down to deck or mast base, then pull downward. Hold the diagonal line taut with the boom visually pulled down. Place mast and boom. Trace a taut diagonal R-hand rope from boom to deck or mast base, then pull downward to show the vang's force.