Main halyard
The halyard that raises the mainsail.
How to sign
Use Dominant R-hand: rope classifier. The base or passive hand is Non-dominant 1-hand/flat-B: mainsail and mast. Set the mainsail. Start at its head near the mast. Trace vertically up the mast and finish with one upward pull. Hold at masthead with the mainsail raised. Place the mainsail. Trace an R-hand rope vertically up the mast to its head and finish with an upward PULL.