JULY, AUGUST, SEPTEMBER 



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120 





BER OF OC- 

 G THE SEA- 

 WAVES DE- 



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9 AVERAGE NUM 

 CASIONS DUI!I^ 

 SON WHEN 



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6 FEET. 



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— O 70 



20 40 60 



100 120 140 160 ISO 200 220 240 260 260 300 

 DURATION (HOURS) 



PERSISTENCE OF FAVORABLE SEAS « 6, 9, 12 FT.) 



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3156 OBSERVATIONS 



9 AVERAGE NUMBER OF OC- 

 CASIONS DURING THE SEA- 

 SON WHEN WAVES ROSE 

 TO 6 FEET OR HIGHER. 



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1 1 1 



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- 



20 iO 60 60 100 120 140 160 leo 200 220 240 260 2 

 DURATION (HOURS) 



PERSISTENCE OF UNFAVORABLE SEAS (5 6, 9, 12 FT.) 



OCTOBER, NOVEMBER, DECEMBER 



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3312 OBSERVATIONS 



19 AVERAGE NUMBER OF OC- 

 CASIONS DURING THE SEA- 

 SON WHEN WAVES DE- 

 CREASED IN HEIGHT BELOW 

 6 FEET. 



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20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 

 (HOURS) 



SEAS « 6, 9, 12 FT.) 



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19 AVERAGE NUMBER OF OC- 

 CASIONS DURING THE SEA- 

 SON WHEN WAVES ROSE 



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- 



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- 



DURATION 



OF FAVORABLE 



I 40 60 60 100 120 140 160 180 200 220 240 260 260 300 

 DURATION (HOURS) 



PERSISTENCE OF UNFAVORABLE SEAS (g 6, 9, 12 FT.) 



