JANUARY, FEBRUARY, MARCH 



° 70 -i 



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6380 OBSERVATIONS 



17 AVERAGE NUMBER OF OC- 

 CASIONS DURING THE SEA- 

 SON WHEN V^AVES DE- 

 CREASED IN HEIGHT BELOW 

 6 FEET. 



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10 40 60 80 100 120 140 160 180 200 220 240 260 280 300 

 DURATION (HOURS) 



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



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1— 





RVATIONS 



!AGE NUMBER OF OC- 

 ONS DURING THE SEA- 

 WHEN WAVES ROSE 

 1 FEET OR HIGHER. 



- 



V 



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17AVE 

 CAS 

 SON 

 TO 



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240 260 280 300 



DURATION (HOURS) 



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



10 20 30 40 50 60 70 80 90 100 



APRIL, MAY, JUNE 



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21 AVE 

 CAS 

 SON 



AGE NUMBER OF OC- 



ONS DURING THE SEA- 



WHEN WAVES DE- 



SED IN HEIGHT BELOW 

 ET. 



- 









6 FE 











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— O 70 



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24 AVERAGE NUMBER OF OC- 

 CASIONS DURING THE SEA- 



_ 



- 









SON WHEN WAVES ROSE 



— 



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II-HV 



Ttr 



•riT- 



'V 



DURATION (HOURS) 



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



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

 DURATION (HOURS) 



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



10 20 30 40 50 60 70 80 90 100 



FIGURE 5C OSV "C" 52.8°N., SS-S^W. 



