CELESTIAL NAVIGATION BY H.O.249.

This is a basic beginner's book introducing the tyro to the tools, the vocabulary, and the techn iques of celestial navigation. Among the recom mended tools are the H.O. 249 Tables, the mos t widely used aming amateur navigators at sea because of their simplicity. The ability to determine one's position at sea both liberate s the sailor from the land and anables him to find his way to his destination. If you can rea d, add and subtract, understnad angles, and use a protactor, you can learn to navigate in your armchair or at sea from Celestial Naviga tion by H.O. 249.