This free nautical charts course from Alison teaches chart reading, passage planning, tidal streams, lights, and buoyage. Advanced level, about 3 to 4 hours.
This free coastal navigation diploma from Alison teaches latitude, longitude, the magnetic compass, and chart plotting. Advanced level, about 10 to 15 hours.
This free celestial navigation course from Alison teaches solar positioning: sextant altitude, rational horizons, and time. Beginner level, 3 to 4 hours.
This free celestial navigation diploma from Alison teaches the celestial sphere, star coordinates, the sextant, and fixing position. About 10 to 15 hours.
