От: | alsemm | ||
Дата: | 18.11.23 21:00 | ||
Оценка: |
Remember the keel? It’s very long, very flat and very thin. It runs all along the bottom of the ship, submerged in a dense, viscous liquid called seawater. The resistance created when wind tries to drag this large, flat area sideways through water is huge – so huge that overall (if we are using vector subtraction, we can say the remaining component is not canceled out) the force takes the ship in the direction of least resistance, which is forwards.
In this way, a sailing boat or ship with fore-and-aft sails can sail as close as 45° off the wind.