What does white exhaust from a marine diesel engine indicate?
Send your answers to george@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.
Many thanks to all who sent in answers to last week’s question on contrails. The winner this week is Amy Grossman, Cambridge, MA who emailed: “Contrails behind jets at altitude indicate high level moisture that can often mean rain in our future.”
