COMPLETE BOATING WEATHER INFORMATION FOR THE MEDITERRANEAN SEA. Now including links to a free app.. This is the complete original Atlas of Pilot Charts + Also now included is 10 year wind & weather information collected by NASA satellites. This is modern latest data. Highly useful for planning boating passages. Pilot Charts depict averages in prevailing winds and currents, air and sea temperatures, wave heights, ice limits, visibility, barometric pressure, and weather conditions at different times of the year. The charts are intended to aid the navigator in selecting the fastest and safest routes with regards to the expected weather and ocean conditions. Few sources of information are more important to offshore sailors than a pilot chart -- and they are fascinating to study even if you never go five miles from port. In essence, they contain frequency and strength of wind from every direction, month by month, for every 5 square of every ocean. Their data are the result of hundreds of years of observation by mariners. Each atlas contains a pilot chart for every month of the year."