Sig. Wave Height from Wind Speed
Fully-developed seas: H_s ≈ 0.22 · V² / g · f(fetch). Simplified Hasselmann + Pierson-Moskowitz asymptote.
Non-dim fetch g·F/V²
21,800 -
Estimated H_s
5.42m
Formula, assumptions, and limits
Fully-developed (PM asymptote) is the left branch; fetch-limited is the right. Use whichever is smaller. Bf 6 (~12 m/s) full → H_s ≈ 3.5 m; Bf 8 (~18 m/s) full → H_s ≈ 7.8 m.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| 10-m wind speed | m/s | anemometer | |
| Fetch length | m | chart | |
| Significant wave height | m | result |