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excel will use the best formula according to the value of the course (0°-90°) orthodromic distance (gc great circle) formula : cos gc = (sine lat a * sine lat b) + (cos lat a * cos lat b * cos longitude diff.)
- Plotting Sheet for Celestial Navigation
universal plotting sheets for celestial navigation . also...
- The Nautical Almanac
The Nautical Almanac - Sun and stars. by Capt. Roberto Iori....
- Star Finder for Astro Navigation
The stellar planisphere in an excel file was created for...
- Errors, Tips & Tricks
the nautical sextant in celestial navigation . How to use a...
- Radar Navigation
RML - Relative Motion Line; SRM - Speed of relative motion;...
- Weather Weblinks
Surface pressure charts: ananalysis & forecast charts by Met...
- Plotting Sheet for Celestial Navigation
Short distance sailing is a term which is applied to sailing along a rhumb-line for distances less than 600 nautical miles. From the formulas derived above, the following are used extensively in short distance sailing:
Rhumb line calculation: Departure position (latitude, longitude) + Course and Distance, to compute Arrival position; Departure position + Arrival position, to compute Course and Distance; Path of constant course between Departure position and Arrival position. Great Circle calculation
The formulas for determining a ship’s dead-reckoned position, given an initial known location, the vessel’s course and speed, and the time elapsed, are referred to as the sailing formulas....
Calculation of a distance on loxodrome (rhumb line) and course angle (azimuth) between two points with a given geographical coordinates.
In broad terms, there are two main types of sailing, namely, the Rhumb Line sailing and the Great Circle sailing. The Mercator Sailing is the most accurate method employed in marine navigation to handle calculations related to Rhumb Line sailing.
Enter the fractional value in cell B1, or the decimal value in cell B5, and inspect the equivalent angular value in arcminutes. Cells containing time data (with the exception of cell B6 in running_fix.xls, dr.xls, and dr_fix_lop.xls) are formatted using the 24-hour clock as HH:MM:SS.
