Resolute is Finnish/Swedish ice class 1A super, but not technically an icebreaker. It is an ice-strengthened ship.
“Ships of the highest ice class, 1A Super, are designed to operate in difficult ice conditions mainly without icebreaker assistance while ships of lower ice classes 1A, 1B and 1C are assumed to rely on icebreaker assistance.“
An icebreaker would not have a bulbous bow like Resolute.