Boom vang
From Freepedia
A boom vang is system of lines on a sailboat used to control the height of the boom and the shape of the sail. It typically runs from the base of the mast to a point about a third of the way down the boom. Due to the great force necessary to change the height of the boom while a boat is under sail, the boom vang usually includes some sort of a pulley system.
The boom vang is one of the three sail shape controls which control sail twist.
| Sails, Spars and Rigging | |
|---|---|
| Sails | |
| Course | Driver | Extra | Genoa | Gennaker | Jib | Lateen | Mainsail | Moonsail | Spanker | Spinnaker | Staysail | Studding | Tallboy | Topgallant | Topsail | Trysail | |
| Sail anatomy and materials | |
| Clew | Dacron | Foot | Head | Kevlar | Leech | Luff | Roach | Tack | |
| Spars | |
| Boom | Bowsprit | Fore-mast | Gaff | Jigger-mast | Jury Rig | Main-mast | Mast | Mizzen-mast | Masthead Truck | Spinnaker Pole | Yard | |
| Rigging components | |
| Backstay | Block | Boom vang | Cleat | Clevis Pin | Cunningham | Downhaul | Forestay | Gooseneck | Guy | Halyard | Outhaul | Peak | Preventer | Rigging (Running) | Shackle | Rigging (Standing) | Sheet | Shroud | Stay mouse | Stays | Throat | Trapeze | |
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