TABLE 5. SEA AMOUNT 
Mean Max. Height 
of Sea Waves 
Code in feet (Approx .) 
0 0 
] 0- 173 
2 1/73 - 1 2/3 
3 12/3 - 4 
4 4- 8 
5 8 - 13 
6 13 - 20 
ih 20 - 30 
8 30 - 45 
9 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 
Approximate 
l to 6 Low swell 
High 
Greater 
than 12 
— 
° 
=| 
@a 
120 
Approximate 
Description Length 
(feet) 
Short or 0 to 600 
Average 
Long Above 600 
Short 0 to 300 
Average 300 to 600 
Long Above 600 
Short 0 to 300 
Average 300 to 600 
Above 600 
