Navigation Course
This is an advanced online course on marine navigation, providing you with the “conditio sine qua non” of offshore sailing. Nowadays most sailors tend to rely on modern equipment like differential GPS or Radar to navigate them through hazardous waters. Not only is such reliance unwanted and possibly dangerous, also the act of navigating by yourself is actually a lot of fun, especially when sailing in Greece or Turkey, which are the perfect to learn how to sail.
What is navigation?
“Navigare necesse est, vivere non est necesse” is latin for: to sail is vital, to live is not. This phrase tells us that both sailing and the “conditio” of positioning are highly intertwined. Indeed, the art of navigation enables you to set a course and sail to your destination by using only nautical charts, a compass and your common sense. The aim of this course is to teach you how to navigate safely while using the minimum of resources: methods that have been in use since the Middle Ages, and are still applied by the professionals
. This course greatly extends on - for instance - the ASA courses and gives you the insight and feel of a seasoned navigator.
Enjoy!
This is chapter 0: Use the moving anchor logo on the right of this page to navigate through the course. Alternatively, click on the links below to study the chapters.
Chapter 1 - Positions
Chapter 2 - Nautical chart
Chapter 3 - Compass
Chapter 4 - Plotting
Chapter 5 - Piloting
Chapter 6 - Tides
Chapter 7 - Tide prediction
Chapter 8 - Currents
Chapter 9 - Navigation aids
Math - Running fixes
Math - Distance of horizon
Math - Vertical sextant angles
Compass deviation table
Lunation, phases of the moon






































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