Tucker remembered how difficult it had been to learn Western navigation for his pilot's license.

He also learned navigation by observing the pilots do their work and was soon given command of ships.

But she had never sailed alone, and had to learn celestial navigation through a correspondence course.

"One guy came in to learn navigation to cross the Sahara," he said.

Later, let us say, the two little boys learned navigation, with a view to entering the navies of their respective countries.

It was established so that potential sailors could learn navigation and mathematicians could train at the school.

But you don't have time to learn navigation.

He had merely gone the way of all the men who learned navigation before him.

In 1697, he was sent to Italy to learn navigation.

The Vikings learned celestial navigation and developed other means of finding land.