Yards. 

 Division = .' 2 Knots 



SCALES. 

 4:1 5:1 



— 10 



(^ rl ^ v\ to t^ ^ o> — 



I I, Mill, I, I I.M.Illl.l I I I I I I I I 



LOGARITHMIC SCALE 



T,,,,i\j,,,,i,,,,7,,,,i,,,Li,,,T iTiTmiT 



Given any two corresponding quantities, solve 

 tor third by laying rule through points on prop- 

 er scales and read intersection on third scale. 



MANEUVERING BOARD 



Price 60 cents (per pad of 50) 



s 8 KSSSS sgsssS§ a g 



I Ii.hIimiI.m.I,,.,!, I I I I 1 I 1 I I I I I I I I I I ll 



TIME in minutes 



g g § S 8!JS|i5 5»;!5 5 5 SSSSSaSissS » S 8SS88? g 8 DISTANCE in yards 



_| 1 1 i | l | i | | | | Hj|i| i |i| i | i I i I i |l | i|i|'l'l'l' l ' l ' l 'l ""l ' I 'I' H ' I ' I 'I ' 1 ' I Relative or actual 



r. -. -. ...... » 2 a B SSSSCS K 8 DISTANCE In mites 



a s ssss ss 



7 'l .1 I I I I I I I I I I iKl I I I I LmU 



SPEED in knots 

 Relative or actual 



' Washington. DC. published Hsy. 1920, it Hydrographic Office, 

 under the authority of Ihe SECRETARY OF THE NAVY 



FIGURE 9. 



New PubUtstJon: 4th. Ed, Ac :., 19i3 4th. Edition, April 1938 



15 



