JANUARY, FEBRUARY, MARCH 



_' 1 ' 



' 1 



1 



1 1 1 



1 1 1 1 1 1 1 1 1 1 1 1 





1440 OBSERVATIONS 



— 











- 









30 AVERAGE NUMBER OF OC- 



- 



— 









CASIONS DURING THE SEA- 



— 



- 









SON WHEN WAVES DE- 



- 



- 









3 FEET. 



- 











— 



- 















- 



-I 















- 



:\ 















~ 



\ 















_ 



-\ 















~ 



\ 



- \ 















_ 



": \ 



















^ 













- 



- 



\ 













- 



1 1 1 



1 1 1 



^'-:.*jj 



.-.^« 



••— -T 



■ti rr." 







. = 



1 1 r 



■•r4-h- 



.Ul.l 



1 1 1 



1 I'l 



1 



20 40 60 



3 120 UO 160 180 200 220 240 3 

 DURATION (HOURS) 



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





1 1 1 



1 1 1 



1 1 1 



1 1 1 



1 1 1 1 1 1 1 1 1 1 1 1 



1- 



HO 



1440 OBSERVATIONS 



— 













- 









30 AVERAGE NUMBER OF OC- 



- 



130 



— 









CASIONS DURING THE SEA- 



— 





- 









SON WHEN WAVES ROSE 



_ 





- 











i 











- 



i "" 



-1 















- 



z 



n 















~ 



« 



• 

















u °° 



1 

















O 70 

 O 



lA. 















- 



^ 



\ 















_ 



il 



T \ 















— 



^ \ 















~ 



















30 



::• \ 















J 







\ 













- 



A •.. 



V. 











- 





A-.'" 



-T-kl. 



ri-r- 



••1-^-^. 



.1 1 1 



1 1 1 



1 1 1 



1 



I 40 60 80 100 120 140 160 180 200 220 240 260 2 

 DURATION (HOURS! 



PERSISTENCE OF UNFAVORABIE SEAS (53,6, 9, 12 FT.) 



I""I""I""I""I"'T"'I""I""I""1 



10 20 30 40 50 SO 70 80 90 100 



"W^ 



APRIL, AAAY, JUNE 



1 1 1 



' 1 1 



1 1 1 



1 1 1 



1 1 1 1 1 1 1 1 1 1 1 1 



_ 





ERVATIONS 



RAGE NUMBER OF OC- 



ONS DURING THE SEA- 



WHEN WAVES DE- 



: 



- 









37 AVE 

 CAS 

 SOK 



- 









3 FEET. 











- 



4 















- 

















- 



- \ 

 7 \ 















- 



\ 

 — "> 



\ 













- 





..'^« 















- 



"1 1 r 



T"I"T 



-=F^ 



=r^*F 



=^+^ 



'm^ 



^^^idp. 





^ 



20 40 60 



100 120 140 160 ISO 200 220 240 3 

 DURATION {HOURS} 



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



_l 1 ' 



1 1 1 



1 1 1 



1 1 1 



1 1 1 1 1 1 1 1 1 1 1 1 



J- 





RVATIONS 



RAGE NUMBER OF OC- 

 ONS DURING THE SEA- 

 WHEN WAVES ROSE 

 3 FEET OR HIGHER. 



- 



- 









37 AVE 

 CAS 



SON 



- 



















- 



4 















- 



1 

 4 















- 



1 















- 



\ 















- 





>h>- 



._j_ 1 1 



1 1 1 



1 1 1 



1 1 1 



1 1 1 



- 



20 40 60 80 100 120 140 160 160 200 220 240 260 2: 

 DURATION (HOURSI 



PERSISTENCE OF UNFAVORABLE SEAS §3,6, 9, 12 FT.) 



|""|""l""l"'T"T"T"'l"'T"T^ 



10 20 30 40 50 60 70 80 90 100 



FIGURE 3E AMBROSE CHANNEL, N. Y. 40°27.1'N., 73°49.4'W. 



