Table C-9 List of chart squares occupied by a research vessel off Alaska (Area IV) in June 1968, 



showing hours in square, seals seen per hour, and number of seals seen and collected 



■■■The base chart is USCGS no. 8802. The side of each chart square measures 18.52 Ian. (10 nauti- 

 cal miles); a square covers an area of 343 km. ^ (lOO square nautical miles). Squares are located 

 by a system of vertical and horizontal numbers. Horizontal numbering begins at the lower right 

 comer of the chart (fig. 16) and vertical numbering at the lower comer. 



105 



