Who is the author of the seminal book on navigation and seamanship The American Practical Navigator?
Send your answers to firstname.lastname@example.org. 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 Ginny Fielding of Greenwich, England who correctly identified the prime meridian as zero degrees longitude and that it runs north to south through her home town. “It’s just down the lane from us,” she emailed.