IDENTIFICATION DATA 



17 



the 24-hour clock, e.g., 00, 06, 12, 18. Twenty-four (24) should not be 

 used to indicate midnight, e.g., midnight of the 7-8 should be entered as 00 

 on the 8th. Chart 1 (at the back of this manual) gives the local time corre- 

 sponding to Greenwich mean noon. 



2700. SHIP'S COURSE (Dg) 



2701. Select the code figure from Code Table 13 corresponding to the 

 course (true) made good by the ship in the 3 hours preceding the time of ob- 

 servation, and enter the figure in column 24. 



Code Table 13 



SYMBOL Dg. - Ship's course (true) made good in 3 hours preceding 

 the time of observation. 



2800. SHIP'S SPEED (Vg) 



2801. Select the code figure from Code Table 14 corresponding to the 

 average speed of the ship during the 3-hour period prior to the observation. 

 Enter the figure in column 25. 



Code Table 14 



SYMBOL Vg. - Ship's average speed made good during 3 hours 



