Table B-2. --List of chart units occupied by a research vessel, 

 showing hours in unit, seals seen per hour, and 

 number of seals seen and collectedj.' off 

 Washington, 1-29 March 1969 



1_/ The base chart is USCGS No. 5052. The sides of each 

 unit are 10 minutes of latitude by 10 minutes of longitude. The 

 units are located by a system of vertical column and horizontal 

 row numbers. Vertical column numbering begins at the lower right 

 corner of chart (fig. 12) and horizontal row numbering begins at the 

 lower left corner. 



75 



