As simple as that sounds, the devil is in the details. And no more detail can be found in any single source than in the Atlas of Pilot Charts, first compiled in the mid-1800s by Lt. Matthew Fontaine Maury, U.S. Navy, recognized as the father of modern oceanography and maritime meteorology. These weather charts encompass the globe and have evolved into a stunning compilation of historical averages regarding wind direction and strength, storm frequency and tracks, major currents, iceberg limits, fog, air temperature, great-circle routes, magnetic variation, and more. For the big passage overview, they are collated into a three-month-per-page format, and for more specific planning, on a one-month basis. There are five volumes in all, categorized by geographic region.