7—1 1 — 1 1 — 7 — 



I Division -2 Miles 

 ■ .1 Division = 2 Knots 



SCALES 

 4:1,5:1 



-72 -90 



— 65 



-20 



-15 



-s 



e s sssssa,ssssi§s g 



I I„„i,„,l i I i I i hi I I„„i„„i lX.1 i I i I i lil i I i i I i i ill 



LOGARITHMIC SCALE 



Given any two corresponding quantities, solve 

 for third by laying rule through points on prop- 

 er scales and read intersection on third scale. 



MANEUVERING BOARD 



TIME in minutes 



§ s sssasiiiiii s § milium 



■ 8 8 3/ftSr3S8l 8 1 DISTANCE In yards 

 I ' M I I I l l ' H ' I ' I ' l l I ' I l |l|' H ' l ' H ' H ' H"" l ' / H 'l'l' H I I I I I Relauve or actual 

 ~ » » <.«-»» s a A RSSSS8 a S DISTANCE in miles 



to r* os oi 



I I I I I I I . I . I I I I I ll 



S S 8 



■ , 1 ■ ... I , .,/,,,, I, ,,,I,,,,LmI„mL„I,.mI 



SPEED in knots 

 Relative or actual 



Pnce 60 cont; (per pa~d of 50) 



Wuhlngton, O.C.. published May. 1920. at Hydtnjtjphic Office 

 under |bt authority of the SECRETARY Of THE NAVY 



FIGURE 5. 



New Publication: 4th. Ed-. V- 1938 4th. Edition, April 1938 



No. 2065 a 



