Field use of water level predictions might be enhanced by providing 

 booklets with monthly predictions contoured for a full year for stations of interest. 

 Contoured water level predictions could be printed in fluorescent inks for increased 

 visual security in nighttime operations. 



CONCLUSIONS 



Response to a field need has led to an improved format for presentation of 

 water-level predictions. Contoured water-level predictions are useful in opera- 

 tional planning and should permit wider use of water level predictions in the 

 field. It should be remembered that the display technique is only as accurate as 

 the hourly predictions on which It is based. 



REFERENCES 



Bronstetter, E. C, 1966, Contour, A Fortran Subroutine for Producing Contour 

 Maps, Oak Ridge National Laboratory, Contract No. W-7405-eng-26. 



O'Conner, Paul, 1964, Short-Term Sea-Level Anomalies at Monterey, California, 

 U.S.N. Postgraduate School Thesis. 



Pore, N. A. and R. A. Cummings, 1967, A Fortran Program for the Calculation 

 of Hourly Values of Astronomical Tide and Time and Height of High and 

 Low Water, Technical Memorandum WBTM. TDL-6, U.S. Department 

 of Commerce/Environmental Science Services Administration. 



Suthons, Commander C. T., R. N. (Ret.), 1959, The Admiral Ity Semi-Graphic 

 Method of Harmonic Tidal Analysis (over a period of one month). 

 Admiral ity Tidal Handbook No. 1, H.D. 505. 



U.S. Coast and Geodetic Survey, 1969, Tide Tables, High and Low Water 

 Predictions, Central and Western Pacific Ocean and Indian Ocean. 



356 



