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THE NAVY OCEANOGRAPHIC OPERATIONS PROGRAM 



were first obtained for charting purposes by U. S. Navy ships 

 conducting surveys along the Pacific Coast of Mexico. The year 

 1919 marked the first use of aerial photographs for charting by 

 the Oceanographic Office. Although the early use of photographs 

 was, of course, limited by the state of technological development 

 of aircraft, cameras, films, and plotting equipment, the use of 

 photogrammetry for certain data collection and measurement 

 purposes is taken for granted today as being the most economical, 

 efficient, and rapid method available. 



Shorelines and coastal features are charted from aerial photographs. 



