JANUARY, FEBRUARY, MARCH 



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27 AVE 

 CAS 

 SOh 



RAGE NUMBER OF OC- 



ONS DURING THE SEA- 



WHEN WAVES DE- 



^SED IN HEIGHT BELOW 

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27 AVERAGE NUMBER OF OC- 



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CASIONS DURING THE SEA- 



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SON WHEN WAVES ROSE 



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TO 



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10 100 120 140 160 180 200 220 240 260 280 

 DURATION (HOURS) 



OF FAVORABLE WAVES (<3,6, 9, 12 FT.) 



40 60 80 100 120 140 160 180 200 220 240 260 21 

 DURATION (HOURS) 



PERSISTENCE OF UNFAVORABLE WAVES (53,6, 9, 12 FT.) 



l""l""l""r"T"T"'r"T 



10 20 30 40 50 60 70 80 90 100 



;^ 



APRIL, MAY, JUNE 



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ERVATIONS 



RAGE NUMBER OF OC- 



ONS DURING THE SEA- 



WHEN WAVES DE- 



: 



- 









37 AVE 

 CAS 

 SOI- 



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3 FEET. 











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10 100 120 140 160 180 200 220 240 260 280 

 DURATION (HOURS) 



OF FAVORABLE WAVES (<3,6, 9, 12 FT.) 



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37 AVERAGE NUMBER OF OC- 



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CASIONS DURING THE SEA- 



— 



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SON WHEN WAVES ROSE 



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140 U 



180 2 



220 2 



260 2 







30 



DURATION (HOURS) 



PERSISTENCE OF UNFAVORABLE WAVES (^3,6, 9, 12 FT.) 



l""l""l"'T"T"r"T' 



10 20 30 40 50 60 70 80 90 100 



l"'T"T"T'i 



FIGURE 3C NANTUCKET SHOALS, MASS. 40°37.0'N., 69°18.5'W. 



