Finnish-Swedish Ice Class (IA Super / IA / IB / IC)
Minimum machinery output per FSICR 2021 for Baltic winter operation: P_min = K·(Δ + D_k)^(2/3).
Class coefficient K
2.03 -
Minimum installed power
1,689kW
Formula, assumptions, and limits
Simplified FSICR 2021 (TraFi 8.11.2021) - K varies by ice class + hull form. IA Super = year-round Baltic (Kemi, Luleå); IA = normal winter; IB / IC = lighter restrictions.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Class coefficient | - | FSICR 2021 Table | |
| Displacement at UIWL | t | loadline | |
| Bow ice-breaking resistance | kN | hull-form fit |