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HYDROGRAPHIC MANUAL 



Page 536 



PRESSURE CORRECTIONS IN FATHOMS 

 10 +8 +6 +4 +2 



2000 



TEMPERATURE AND SALINITY CORRECTIONS IN FATHOMS 



Figure 115— Velocity correction graph. (Reproduced at reduced scale. Do not use this figure for deriving velocity corrections by 



the graphic method.) 



from this intersection to the index line of the graph, and transfer this distance to Form J-100-5 in the 

 proper direction at the depth of the bottom of the first layer (i. e., just as in the numerical method, 

 in which the layer correction must be plotted at the depth shown in column (/)). This gives one point 

 on the desired velocity correction curve. As explained under "Scales of the Graphs," where 5-fathom 

 layer-intervals are used, the intercept must be divided by four prior to plotting on Form J-100-5. 



