David Burch Navigation Blog
Notes on marine navigation and weather
Saturday, September 17, 2022
S-63 Encrypted International Charts—Sources and Installation
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These notes are intended as background for several videos illustrating the purchase and installation of S-63 charts. • We are spoiled in th...
Friday, July 22, 2022
Start Saying Goodbye to Your Favorite Paper Chart
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This should not be a surprise. NOAA told us they were Sunsetting Traditional Paper Charts back in 2019 and that they would all be gone by t...
3 comments:
Tuesday, July 5, 2022
Magnetic Variation on Electronic Navigational Charts (ENC)
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Magnet variation (magvar) is crucial to marine navigation. It is the difference between true north and the direction of north read from a co...
5 comments:
Monday, July 4, 2022
Wind Direction in Grib2 Model Forecasts
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Errata added May 18, 2023. This article was intended to point out a limitation in the HRRR data provided by several sources in that the win...
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