great circle sailing & loxodromic navigation - distance and course (bearing)

formulas and calculations to obtain distance, course/bearing ( rhumb line - loxodromic distance  and orthodromic navigation ), waypoints route calculator - excel file - formel zur berechnung der distanz und seefahrt route  - die loxodrome und orthodrome (grosskreis - großkreis) navigation - excel-datei

the  nautical  almanac  of  the  stars

A freeware excel spreadsheet with astronomical data of sun, aries and nautical stars

nautical  astronomy -  estimated height and azimuth of a celestial body

formula and calculations to obtain altitude and azimuth of a celestial body observed with a sextant (excel file) - formel zur berechnung der höhe und azimut von sonne und sternen -  excel-datei 

free listing program basic for navigation and nautical astronomy

IALA BUOYAGE SYSTEM