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UNIT |

Code: | 
0112/2///62720#UAA110 |

Version: | 
001 |

Revision: | 
03 |

IRDI: | 
0112/2///62720#UAA110#001 |

Preferred name: | 
Beaufort |

Synonymous name: | 
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Short name: | 
Bft |

Definition: | 
unit for classification of winds according to their speed, developed by Sir Francis Beaufort as measure for the over-all behaviour of a ship's sail at different wind speeds |

Note: | 
Between wind speed v and Beaufort size B exists the following interrelation from 1946 according to the revision of the Beaufort scale: v = 0,8360 m/s • B¹‧⁵, where v is the wind speed 10 meters above the earth ground (surface). The beaufort scale ranges from calm (absolutely calm seas with 0 Bft) to hurricane (exceptionally choppy seas with 12 Bft). |

Remark: | 
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Definition source: | 
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Definition class: | 
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Base unit: | 
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Unit structure: | 
m s⁻¹ |

Unit in text: | 
Beaufort |

Unit in SGML/XML: | 
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <!-- UAA110 --> <mrow> <mi mathvariant="normal">Bft</mi> </mrow> </math> Bft |

UN/ECE code: | 
M19 |

Unit conversion: | 
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Formula in text: | 
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Data object identifier: | 
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Time stamp: | 
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Applicable properties: | 
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Applicable list of units: | 
0112/2///62720#UAD236 - velocity |

Status level: | 
Standard |

Published in: | 
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Version initiation date: | 
2014-02-11 |

Version release date: | 
2014-02-11 |

Revision release date: | 
2023-07-24 |

Responsible Committee: | 
IEC/SC 3D |

Change request ID: | 
C00124 |

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