Atle (1974 icebreaker) explained

Bollard pull190 tonnes
Bunker capacity:2,200 m3
Endurance:6–8 weeks
Atle is the first to be delivered from the Wärtsilä Helsinki Shipyard. After sea trials in mid-1974 she was delivered on 21 October. She was then crewed by personnel from the Swedish Navy and on 24 October she set sail for Stockholm.

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