40 
  
  
v he 
NAUTICAL MILLS 
0 1060 200 300 400 500 
eer 4d 
—b wa 
KILOMETRES 
RC 
  
o 2 
| 190 200 300 
o 
  
   
   
     
  
  
LAPTEV SEAN 
1 
   
NOVOSIBIRSKIYE 
° OSTROVA 
©, 
  
  
80 
120 
140 
  
160 
  
  
  
Figure 1 - The heavy lines show the course of Soviet drifting stations SP-6, SP-7 and SP-8, 
Depth contours are taken from Soviet sources correct to 1956. (Polar Record, Vol. 9, No. 63, 
1959, p. 571) 
Y 
Arc