Ice Class IA or Ice Class PC7 for Arctic Operations
Additional strengthening of vessels intended to operate in ice range from very light scantling increases to accommodate minor interaction with ice up to the creation of very significant icebreaking structures. These structures are measured by an Ice Class notation assigned by the vessel’s Classification Society. The two main rule sets used in the marine industry are the International Association of Classification Societies (IACS) Polar Class rules and the Finnish Swedish Ice Class Rules (FSICR). The two lowest Polar Classes overlap with the two highest FSICR Ice Classes, and at this ice strengthening level, there continues to be a tendency to select the FSICR over the Polar Class for ships intended for summer / autumn service in Polar waters. This paper explores the structural scantling differences between these ice classes.
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