Polar Class Ice-Belt Plate Thickness
Approximate ice-belt plate thickness per IACS UR I2 - scaled from ice design pressure.
Ice design pressure (MPa)
4.0MPa
Ice-belt plate thickness
29.7mm
Formula, assumptions, and limits
Order-of-magnitude using an average ice design pressure per Polar Class. IACS UR I2 full calculation involves plate-aspect and boundary-support factors. Ice belt typically extends from 0.3 m below BWL to 0.8–1.2 m above summer draft.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Stiffener spacing | m (from mm) | structural drawing | |
| Ice design pressure | MPa | IACS UR I1 table | |
| Plate yield strength | N/mm² | steel grade |