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 Team GBR website >> The BBC is not responsible for the content of external internet sites |
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 MAST AND BOOM Known jointly as the rig. The mast is the vertical spar, made of carbon fibre, up which the mainsail and various headsails are hoisted. It is about 110ft (36m) tall and weighs 800kg load, held up by various wires running to the front (forestay) and back (backstays) of the boat. Sideways support is given by shrouds. The boom is a carbon fibre spar about 30ft (9m) long which supports the foot of the mainsail. It weighs 70kg. |
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