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The primary action of the boom is to keep the foot flatter when the sail angle is away from the centerline of the boat. The boom also serves as an attachment point for more sophisticated control lines. Because of the improved sail control it is rare to find a non-headsail without a boom, but lateen sails, for instance, are loose-footed. In some ...
To furl the mainsail, the boom is unlocked, and then rotated to take up the desired amount of mainsail, and then locked in place. More advanced boom furling systems will wrap the furling mechanism in a slotted cover, so the sail furls inside the cover; this also makes sheeting easier, since the sheet may be attached to the outer portion of the ...
Furling refers to stowing a sail into a neat package after it has been hand ed, but leaving it still fastened in the position from which it can be set. For a sail with a boom this usually means flaking the sail down over the boom and securing with sail ties ( gasket s).
In mainsail furling systems the sail is either wrapped around the boom by a mechanism in the gooseneck or hardware inside the boom winds it around a rotating foil. Furling systems controlled with lines led to the cockpit allow reefing without crew having to go on deck in heavy weather. Roller reefing also allows more variable sail area than ...
The vang typically runs from the base of the mast to the boom. Due to the great force necessary to change the height of the boom while a boat is under sail, a line-based boom vang usually includes some sort of a pulley system. Hydraulic piston vangs are used on larger sailboats and controlled by manual or electric hydraulic pumps. [2]
15. Furling marks. The names of corners of sails vary, depending on shape and symmetry. Head – In a triangular sail, the corner where the luff and the leech connect is called the head. [16] [8] On a square sail, the top corners are head cringles, where there are grommets, called cringles. [17]
The Bravo is a recreational sailboat, with the dual hulls and cockpit made from rotomolded polyethylene and an aluminum rotating mast, supported by a bi-pod instead of standing wire rigging. It has a single square-topped, roller furling sail, a catboat rig with no boom and a mast-top mounted float to prevent turtling, that also acts as a wind ...
The 2000 (formerly the Laser 2000) is a performance sailing dinghy designed by Phil Morrison and currently sold by RS Sailing.It combines a traditional GRP hull and foam sandwich deck moulding with a modern asymmetric rig including a furling jib, reefing mainsail and single line gennaker hoist system.