With the appearance of the "New Navigation" about fifteen years ago there began a period of increased interest in the technique of that art. The Institute has printed numerous articles devoted to such subjects as arc and tangent methods, azimuth finding, haversine formulæ, Aquino's Tables, and even the humble latitude and longitude factors. Pages with a wealth of long unfamiliar mathematical signs have been written in minute analysis of the relative advantages and disadvantages of different methods of working out sights. All of this work is, without question, excellent. As representing the trend of present-day investigation, however, might it not give rise to the impression that the last refinement of the art of navigation is now being sought in some instantaneous and unlaborious method of working out sights? Such may, indeed, be the case. There is certainly an air about those navigators that have just learned to work Marcq St. Hilaire instead of the time sight.
Some Suggestions in Practical Navigation
By Lieut. Commander A. J. Hepburn, U. S. N.