Sonardyne 8221 HPT - Appendix C - Sea State Table

Type 8221, 8212, 8142 & 8091 HPT
Type 8182 HPT Modems
HPT Variants
UM-8142
Issue B Rev 1
Appendix C – Sea State Table 82
– Sea State Table Appendix C
Wave Height (metres) Wave Height (feet) Characteristics
0 m 0 ft Calm (glassy)
0 to 0.1 m 0 to 0.3 ft Calm (rippled)
0.1 to 0.5 m 0.3 to 2 ft Smooth (wavelets)
0.5 to 1.25 m 2 to 4 ft Slight
1.25 to 2.5 m 4 to 8 ft Moderate
2.5 to 4 m 8 to 13 ft Rough
4 to 6 m 13 to 20 ft Very Rough
6 to 9 m 20 to 30 ft High
9 to 14 m 30 to 46 ft Very High
Over 14 m Over 46 ft Phenomenal