52 c 



51' 



50' 



49° 



48 c 



47° 



46' 



45° 



44' 



43° 



42' 



41' 



40° 



39' 



38' 



56° 55° 



J , 



1 1 1 i i l ii i n 1 1 ii i i I ii i ni l i i i i li i i i il i i i i i 1 1 i i ii li i i ii 1 1 i i 1 1 I ii i i il i 1 1 ii I ii i i 1 1 Tim 



56° 55° 54° 53° 52° 51° 50° 49° 48° 47° 46° 45° 44° 43° 42° 



ICE CONDITIONS ▲ BERG 



FOR 1200 GMT 13APR 77 ■ GROWLER 



BASED ON OBSERVED AND X RADAR TARGET 

 FORECAST CONDITIONS. 



SEA ICE CONCENTRATION 

 IMTffl LESS THAN 6 OKTAS 

 E^ 6 OKTAS OR MORE 



Figure 9.— Ice Conditions, 1200 GMT 13 April 1977. 



16 



