“Wind flags can be used to estimate wind speed by their angle. If a flag is at an 80-degree angle, that number is divided by the constant 4—to get 20 miles per hour. Likewise, if the flag only waves at… — Howard E. Wasdin Copy Share Image
“Unfortunately for Mariners, the total amount of wave energy and storm does not rise linearly with wind speed, but to its fourth power. The seas generated by a 40 knot wind aren’t twice as violence as those from a 20… — Sebastian Junger Copy Share Image
