Contra-rotating propellers (CRP) are used in various types of ships due to their superior efficiency and fuel economy. Azimuth propulsors have become the norm for ice-breaking vessels due to the maneuverability and operational versatility they provide. The ICE CRP propulsor possesses the high efficiency of CRP and the great maneuverability of an azimuth propulsors. Equipped with both pushing and pulling propellers, it also provides good ice-milling capabilities with the pulling propeller and enhanced ice-management ability with the unique propeller flow of a CRP propulsor. Steerprop has conducted a series of ice model tests at the Aker Arctic ice laboratory to study the effects of CRP propulsors propeller flow with varying installation angles and steering angles on the ice management and ice-going capability of ice-breaking vessels.

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