Table C-3 List of chart squares occupied by 



a research vessel off Washington in Decem- 

 ber 1967, showing hours in square, seals 

 seen per hour, and number of seals seen and 

 collected-'' 



Table C-4. — List of chart squares occupied by 

 a research vessel off Washington in January 

 1968, showing hours in square, seals seen 

 per hour, and number of seals seen and col- 

 lected^ 



Square 



Hours 



in 



square 



Seals 



seen per 



hour 



Seals 



Seen Collected 



Number Number Number Number 



^The base chart is USCGS no. 5052. The side 

 of each chart square measures 18.52 km. 

 (10 nautical 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. 11) and vertical numbering at the lower 

 left corner. 



Square 



Hours 



in 



square 



Seals 



seen per 



hour 



Seals 



Seen Collected 



Number Number Number Number 



^The base chart is USCGS no. 5052. The side 

 of each chart square measures 18.52 km. (10 

 nautical miles) ; a square covers an area of 

 343 km.^ (100 square nautical miles). Squares 

 are located by a system of vertical and hori- 

 zontal numbers. Horizontal numbering begins 

 at the lower right comer of the chart (fig. 

 12) and vertical numbering at the lower left 

 comer. 



101 



