Designed for those who make their living on the sea or who navigate offshore for recreation, this comprehensive textbook introduces the mariner to each navigation and communication system and outlines its uses and limitations in practical application. An introduction to the basic theory of radio waves and how they affect system use is followed by descriptions of the various types of equipment and how they function. Especially useful for the navigator are discussions of radio direction finding systems, including radar beacons; hyperbolic radio navigation systems; satellite navigation systems,...