What does a halyard do?
Short answer
Hoists a sail up the mast
A halyard is a rope used to hoist (raise) a sail up the mast. The word comes from 'haul yard' — hauling up the yard (horizontal pole).
Sources and scope
Reviewed by Richard Moore on . This answer is scoped to united kingdom and general recreational seamanship; check the current chart, publication, local rules and official operational guidance before acting afloat.
Quick check
What does a halyard do?