David Burch Navigation Blog
Notes on marine navigation and weather
Sunday, October 27, 2024
USCG License Exams Come of Age — Tide Wise
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In 2020 NOAA announced that this was the last year they were going to authorize an annual set of tables for tides or for currents. The tabl...
Tuesday, October 1, 2024
Wreck Symbols on Electronic Navigational Charts (ENC)
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The International Hydrographic Organization (IHO) describes light symbols as the most complex electronic navigational chart (ENC) symbols in...
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Saturday, September 21, 2024
Learning Chart Navigation Using NOAA Custom Charts (NCC)
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We are in the midst of a revolution in US nautical charting. Traditional paper charts (TPC) have been discontinued by NOAA — a process that ...
Friday, July 26, 2024
How to Get a Copy of a Discontinued NOAA Chart
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Part 1. I know the name or number of the discontinued chart I want. (a) Go to Part 3. Part 2. I do not know what charts were available th...
Wednesday, July 17, 2024
Nautical Chart Carriage Requirements When Traditional Paper Charts No Longer Exist
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Traditional paper charts will all be gone in six months; most are gone now. Here is a summary of the USCG's official chart carriage pol...
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