CONTENTS 



Page 



CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (SI) 6 



I INTRODUCTION 7 



II NOS DIGITAL DATA 7 



III PROGRAM ZGRID1 8 



IV PROGRAM CONTOR 8 



V LIMITATIONS 8 



1. ZGRID1 15 



2. CONTOR 15 



VI SUMMARY 15 



LITERATURE CITED 16 



FIGURES 



1 Index (1° square areas) to hydrographic data (except those of the 



Alaskan coast) , 1930 to 1965 only 9 



2 Index (1° square areas) to hydrographic data off the Alaskan coast, 



1930 to 1965 only 10 



3 ZGRIDl-produced soundings offshore of Great Egg Harbor Inlet, 



New Jersey, in a 0.03° square area 11 



4 ZGRIDl-produced bed elevations near CERC's FRF at Duck, North Carolina . 12 



5 ZGRIDl-produced regularly spaced depth values for the same area off 



of Great Egg Harbor Inlet, New Jersey, covered by Figure 3 13 



6 CONTOR- produced depth contours for the same area off of Great Harbor 



Inlet, New Jersey, covered by Figures 3 and 5 14 



7 CONTOR- produced depth contours for the same region near CERC's FRF 



covered by Figure 4 14 



