To me AIVIQ is, by her design, an icebreaking anchor handling tug/supply vessel designed to operate in the marginal ice zone, not a “true” icebreaker. Sweden chartered three similar ships - TOR VIKING and two sister ships - to serve as icebreakers in the Baltic Sea. They are somewhat smaller and less powerful (275 ft vs. 360 ft, 13.44 MW vs. 16 MW), but have higher power-per-beam ratio (0.75 MW/m vs. 0.66 MW/m) which should result in better icebreaking capability. However, they have the same type of propulsion system: diesel engines mechanically coupled to propeller shafts and CP propellers in nozzles. TOR VIKING also has 13-ton flywheels in each main engine to iron out torque variations due to propeller-ice interaction and to allow fast change of pitch for reversing.
This is how good they are in Baltic Sea ice conditions:
Those two were completely helpless and had to call in a 1970s diesel-electric icebreaker to help themselves and the ferries…