Table C-7 — List of chart squares occupied by a research vessel off Alaska (Area III) in June 

 1968, showing hours in square, seals seen per hour, and number of seals seen and collected'' 



-■•The base chart is USCGS no. 8500. The side of each chart square measures 18.52 km. (lO nauti- 

 cal miles); a square covers an area of 343 km.^ (100 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. 15) and vertical numbering at the lower left comer. 



Table C-8.--List of chart squares occupied by a research vessel off Alaska (Area III) in August 

 1968, showing hours in square, seals seen per hour, and number of seals seen and collected-' 



■"■The base chart is USCGS no. 8500. The side of each chart square measures 18.52 km 

 cal miles) ; a square covers an area of 343 km 

 by a system of vertical and horizontal numbers 

 comer of the chart (fig. 18) and vertical numbering at the lower left comer 



(10 nauti- 

 ^ (100 square nautical miles). Squares are located 

 Horizontal numbering begins at the lower right 



104 



