JANUARY, FEBRUARY, MARCH 



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6380 OBSERVATIONS 



12 AVERAGE NUMBER OF OC- 

 CASIONS DURING THE SEA- 

 SON WHEN WAVES DE- 

 CREASED IN HEIGHT BELOW 

 6 FEET. 



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10 40 60 80 100 120 140 160 180 200 220 240 26 

 DURATION (HOURSI 

 PERSISTENCE OF FAVORABLE SEAS (< 6, 9, 12 FT.) 





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6380 OBSERVATIONS 



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12 AVERAGE NUMBER OF OC- 

 CASIONS DURING THE SEA- 

 SON WHEN WAVES ROSE 

 TO 6 FEET OR HIGHER. 



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DURATION (HOURS) 



PERSISTENCE OF UNFAVORABLE SEAS 



10 20 30 40 50 60 70 80 90 100 



APRIL, MAY, JUNE 



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6552 OBSERVATIONS 



17 AVERAGE NUMBER OF OC- 

 CASIONS DURING THE SEA- 

 SON WHEN WAVES DE- 

 CREASED IN HEIGHT BELOW 

 6 FEET. 



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100 120 140 160 180 200 220 240 26' 

 DURATION {HOURS) 



OF FAVORABLE SEAS (< 6, 9, 12 FT.) 



5 50 

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17 AVERAGE NUMBER OF OC- 



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CASIONS DURING THE SEA- 



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SON WHEN WAVES ROSE 



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) 40 60 80 100 120 140 160 180 200 220 240 260 280 300 

 DURATION (HOURS) 



PERSISTENCE OF UNFAVORABLE SEAS (5 6. '. '2 FT.) 



O 10 20 30 40 50 60 70 80 90 100 



FIGURE 5B OSV "B" 56.5°N., 51.0°W. 



