The Atlas of Oceans by Jimmy and Ivan Cornell is a gold mine in color A3 size of over one kilogram. This one won't fit in an iPad !
60 Pilot Charts Updates to the latest data, 69 transoceanic route charts, Tactical remarks and suggestions for the choice of the best crossing times provided by routers and meteorologists specializing in each area.
It had the passion and experience of the author of famous " World Cruising Routes ” (*) and those of his son to carry out such a work.
Wind data were obtained from a NOAA program which contains, in a global grid for the surface of the oceans, High-resolution wind vectors following an overall grid of 0.25° (15 NM) and in several resolutions of 1987 down to 2010. Wind speeds were determined by assembling observations from multiple satellites.
The data for the currents were obtained from a NOAA source based on the OSCAR Program Measuring, in near real-time, currents on the surface of the globe by deduction from satellite altimetry and scatterometric data. The program is coordinated by ESR (Earth and Space Research), a U.S. not-for-profit institute specializing in oceanographic research.
The chart data from two sources : OpenStreetMap and vector and digitalized free charts data from Natural Earth.
Many other contributors are cited as sources at the end of the book.
In English Version (**) for a reasonable price of 79 euros, inescapable ! The only difficulty will be to put it on board, view the size of smaller and smaller chart tables.
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(*) World Cruising Routes
(**) 2th edition 2018
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A free alternative (Quickscat data)…
http://cioss.coas.oregonstate.edu/cogow/
– Choose a blue area with the mouse and click
– Choose a date (fortnightly)
– Click on an area
– The result is a more detailed and above all, by hovering the mouse over a point, a compass rose (downloadable)
Useful for preparing for a long sail