H. 0. Pub. No. 605 



U S. HYDROGRAPHIC OFFICE 

 TECHNICAL REPORT NUMBER 2 



GRAPHICAL CONSTRUCTION OF 

 WAVE REFRACTION DIAGRAMS 



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By 



J. W. Johnson, M. P. O'Brien and J. D. Isaacs 



University of California 



Department of Engineering 



Berkeley, Calif. 



JANUARY 1948 



ISSUED UNDER AUTHORITY OF 



THE SECRETARY OF THE NAVY 



WASHINGTON, D. G. 



For sale by the Hydro^raphic Office, Washinsrton. D. C. 

 and the Superintendent of Documents 



Price 50 cents 



