SCALES 

 2:1 3:1 



38— i 57—1 



,-mi 1 1 1 1 1 rnm 



."■•<? 



■*•• 



'A, 



■ PF*-^&M: 



/.• 



SCALES 

 4:1 5:1 



M 



3f* 



(Sketch a) * 



(Sketch c) 



£ ——■■•£ K .,,..... 



■J? a. -• 



Y^ 



y 



¥ 



V" 



&■ 



:cx 



r 



■i , 



sx, 



/ 



V. 



7? 



-^ • ' 



/ > 



X 



^ 



\60 



3? 



(Sketch d).' 



-55 



— 16 —20 



-5 



■* «Q «» h °» oi 



I I I I i I 1 , ■ , ,l....l,,,.l..,,l.,,.li,,.l I 1 I I I I I I ,,, i I I I I....I....I I I I I I I I I 



8 H s n 3 



■I -■mImmIhmIhi 



S S ! 



LOGARXTHMiC SCALE 



Given any two corresponding quantities, solve 

 for third by laying rute through points on prop- 

 er scales and read intersection on third scale. 



MANEUVERING BOARD I 



Price 60 canto (per pad of 50) 



TIME fn minutes 



s i § iiigisiiiiil 1 ! IIIIIIIIISI 



b8 S S SSES8S $ % DISTANCE in yards 



H ■ | l I ' I ' I I 1 I ll'l'l ' l 'l'l ' I ' I ■ J ■ i ■ i ■ I ■ l-l ■ I ■ i ■ I -i ' I ■ i 1 1 1 l | l H ' H ' 1 '1 I 1 ' I Relate or actual 



„ . «.-o„ 2 a R S8SSSS E 8 DISTANCE in miles 



J I ! I I — I i I i I i I i I i I 1 1 . ■ 1 1 miI.m.1.., luidimUlJ 



SPEED (n knots 

 Re'iative or actual 



WashiitEloo. O.O, published Hay, 1920, at Hydrographfc 03"ice, 

 tOKtar the authority of the SECRETARY OF THE NAVY 



NM PuMiotton: 4Ul Ed. Apr, 193S <3i EdiUoo, ,'t: .1 1933 



No, 28G5A 



FIGURE 13. 



23 



