German Air Almanac
(See page 1594, this issue)
Commander William Sinton, U. S. Navy. —Mr. Collins has been in the Research Division of the Hydrographic Office for many years. He has thus been able to follow the developments in navigation made by each of the maritime nations of the world. He is particularly well qualified to comment on new navigational methods.
The rapid increase of range of aircraft and the development of bad weather flying has forced the growth of short and simplified methods of navigation, most of which are satisfactory for the maritime navigator. The aviator can perhaps accept slightly larger errors in position but must be able to get a line of position in a minimum of time under difficult working conditions. The new Air Almanac and H.O. 214 are the United States answers to the problem.