TABLE 5. SEA AMOUNT 



Code 





 1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 



Mean Max. Height 

 of Sea Waves 

 in feet JfApprox ,) 









- 



1/3 



1/3 - 



1 2/3 



1 2/3 - 



4 



4 - 



8 



8 - 



13 



13 - 



20 



20 - 



30 



30 - 



45 



over 



45 



Description 



Calm (glassy) 



Calm (rippled) 



Smooth (wavelets) 



Slight 



Moderate 



Rough 



Very rough 



High 



Very high 



Phenomenal^ 



+ As might be expected in center of hurricane 



TABLE 6. SWELL AMOUNT 



Cod(£ 



Approximate 

 Height 

 (feet) 



Description 



Approximate 



Length 



(feet) 



No swell 



1 to 6 



Low swell 



Short or 

 Average 



Long 



to 600 



Above 600 



6 to 12 



Short 



Moderate 



Average 



Long 



to 300 



300 to 600 



Above 600 



Greater 

 than 12 



Short 



High 



Average 



Long 



Confused 



to 300 



300 to 600 



Above 600 



52 



