56 



NAUTICAL CHART MANUAL 



le K 1^1* 1*1* '* I* r* 



™ -*« l*n,,'* ',^ t? '.? 





^ 







Section of a 1943 basic hydrographic survey which was applied to the lower half of the section 

 of chart shown on right below. 



El"*' « 

 r 26 



2!R22 64 

 .15' 51 l4\r;-7L 



3J 34 „^A77/S' -'-8-'' ss^j^-^^ivWI^ '7, 15 1 



dnk i 3i 



20 



^i ^ -,? 



II 



42 



56 b. 39 



7' 



Compilation made in 1907 showing selec- 

 tion of soundings in fathoms from an early 

 hydrographic survey. 



Selection of soundings principally from 

 basic survey shown above. Depth curves have 

 been added for echo sounding navigation. 



Note small number of charted soundings 

 required to bring out the essential features. 



