When working with an HF radio, SB or Ham, what is the skywave effect?
Send your answers to cruisingcompass@bwsailing.com. A winner will be selected randomly from the correct answers and will win a one-year subscription to the digital version of Blue Water Sailing magazine.
Congratulations to Dennis DiMillo of Bradenton, FL, who correctly answered last week’s Mindbender. “Almost no one uses spherical trigonometry any more, but the math was once how you calculated your position at sea using celestial navigation. “
