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I Division=2 Miles- . 

 .1 Division=2 Knots '• 





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SCALES 

 4:1 5:1 



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I I 1 1 1 ll 



LOGARITHMIC SCALE 



Given any two corresponding quantities, solve 

 for third by laying rule tnrough points on prop- 

 er scales and read intersection on third scale. 



MANEUVERING BOARD L 



' i ' T ' J ' i ! T 1 1 1 ' i iT ' T ' T ' T 



i i i i i i i i 1 1 1 1 1 



Price 60 cents (per pad of 50) 



Washington, D.C.. published May, 1920, at Hydrographic Office, 

 under the authority ol tha SECRETARY OF THE NAVY 



TIME in minutes 



l^srfg8SS 2 S DISTANCE in yards 



1 I | ' I'i' I'I — l — t— H Relative or actual 



SKSSSSS S 8 DISTANCE In miles 



SPEEO in knots 

 Relative or actual 



New Publlcauon: 4th, Ed . Apr,, 1936 4tn. Edition, April 1933 



Nc,28C5r» 



FIGURE 14. 



593046°— 44- 



25 



