To refresh the memory, or to spend a few one day hours without wind...
The great art of astronomical navigation is lost. "Where am I?" is however the fundamental question of the sailor out of sight of the grounds...
Without GPS (Total Positioning System), without electronics nor computer, the modern deep-sea sailor is almost stripped... It remains to him to excavate in the hold in the search of its sextant and its computation charts.
To refresh the memory to him, or to spend a few one day hours without wind, two free courses to learn the rudiments here from astronomical navigation.
On line or to download, well explained bases, stage by stage.
A course translated of Brazilian, very well done but more technical.
Loose Large course
This troisiéme course is interesting for its historical aspect, but several bonds are broken and do not allow to continue the course...
Total positioning system
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