Examples from the Web for downhaul
Make for the nearest port with all speed, and keep a man at the downhaul ready at a moment's notice to lower sail.Boat-Building and Boating|Daniel Carter Beard
Sometimes it is well to make up the downhaul as is done with the downhaul of the topmast studdingsail.
I ran forward and had the downhaul of the flying jib all in and fast as we slipped by the boat a hundred feet to leeward.The Sea-Wolf|Jack London
Joe found the jib-halyard and cast it off the pin, and, as the canvas fluttered down, came in hand over hand on the downhaul.The Cruise of the Dazzler|Jack London
Haul out on the downhaul, hoisting and lowering on the halyards.