| 31. | The drawing below shows the vector operations and resulting calculations for sailing upwind.
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| 32. | To sail upwind, a conventional sailing vessel must tack across the wind.
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| 33. | Two sights were used, one for bombing upwind and another for downwind.
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| 34. | He always hunts upwind, moving very slowly.
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| 35. | Once a boat gets ahead, it is able to extend, especially upwind.
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| 36. | "We're upwind,"
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| 37. | Our president observed it by staying upwind of the tear gas in Quebec City.
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| 38. | Upwind polluters fought that, too, but they lost that case last June.
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| 39. | Upwind or downwind from germs or nerve gas?
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| 40. | Wings enhance maneuverability and speed while sailing upwind.
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