The evolution of techniques and skills in the art of marine navigation spans centuries. However, in the last thirty years, the science of navigation has been advancing faster than ever before. We have moved into the electronic age and have many marvelous systems and devices to help the navigator make informed decisions quickly and accurately. This paper discusses many different electronic navigation systems and equipment. It is intended to give a general understand­ing of what these systems are and how they operate, as well as some of their limitations and misconceptions. Currently, the most popular system among yachtsmen is loran, and it will be the subject of the oral presentation.

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