dvon any two corresponding quantities, sofve 

 for third by laying rule through points on prop- 

 er scales and read intersection on third scale. 



DISTANCE In yards 

 ■j Relative or actual 



£ g DISTANCE in miles 



MANEUVERING BOARD I 



SPEED In knots 

 Relative or actual 



Prise 60 cents (per pad of 50) 



Washington. DC. published Mir. 1920- ■' Hydragraphic Office. 

 * the au-Jiorih; of tho SECRETAffr OF THE NAVY 



Nr* PubtaOoru 401. Ed, Apr, 1 



4th. Edit™. April 1938 



No. 2065 ■ 



FIGURE 16. 



29 



