Hoisting dynamic factor ψ for offshore and shipboard cranes per DNV-ST-0378 / API 2C - the multiplier on static load for design.
Formula
$$ \psi = \psi_0 + 0.3,v_{hoist} + 0.15,H_s $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $\psi_0$ | Base dynamic factor | - | DNV-ST-0378 |
| $v_{hoist}$ | Hoisting speed | m/s | maker data |
| $H_s$ | Sea state at lift | m | metocean |
Sources
- DNV-ST-0378.
- API Spec 2C.