Wave-encounter frequency seen by a moving ship: ω_e = ω − (ω²·V·cos μ)/g.
Formula
$$ \omega_e = \omega - \frac{\omega^2 V \cos \mu}{g} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $ω$ | Wave frequency (absolute) | rad/s | buoy / model |
| $V$ | Ship speed | m/s | log |
| $μ$ | Angle between heading and wave direction | ° | weather |
| $\omega_e$ | Encounter frequency | rad/s | result |
Sources
- Lloyd (1998) - Seakeeping: Ship Behaviour in Rough Weather.