UFC 4-159-03
3 October 2005
Table 3-14. (continued) Storm Parameters
(d) World Meteorological Organization Sea State Scale
Sign. Wave Height
Sustained Wind Speed
Modal
SEA STATE
(ft) [m]
(knts) [m/s]
Wave
Period
Range
(sec)
0
CALM/GLASSY
NONE
NONE
-
1
RIPPLED
0-0.3 [0-0.1]
0-6 [0-3]
-
2
SMOOTH
0.3-1.6 [0.1-0.5]
7-10 [3.6-5.1]
3-15
3
SLIGHT
1.6-4.1 [0.5-1.2]
11-16 [5.7-8.2]
3-15.5
4
MODERATE
4.1-8.2 [1.2-2.5]
17-21 [8.7-10.8]
6-16
5
ROUGH
8.2-13.1 [2.5-4.0]
22-27 [11.3-13.9]
7-16.5
6
VERY ROUGH
13.1-19.7 [4.0-6.0]
28-47 [14.4-24.2]
9-17
7
HIGH
19.7-29.5 [6.0-9.0]
48-55 [24.7-28.3]
10-18
8
VERY HIGH
29.5-45.5[9.0-13.9]
56-63 [28.8-32.4]
13-19
9
PHENOMENAL
>45.5 [>13.9]
>63 [>32.4]
18-24
52
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