HomeCalculatorsPolar Class Ice-Belt Plate Thickness

Polar Class Ice-Belt Plate Thickness

Approximate ice-belt plate thickness per IACS UR I2 - scaled from ice design pressure.

PolarIACS I2
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

SymbolMeaningUnitSource
Stiffener spacingm (from mm)structural drawing
Ice design pressureMPaIACS UR I1 table
Plate yield strengthN/mm²steel grade