@7ea6f088 You don't need icebreakers in +4ºC 2050 warm-Earth, silly.

(Based on scientific studies, if greenhouse gas emissions continue on the same trajectory, the Arctic could warm by 4°C year-round by the middle of the century")[https://www.theguardian.com/us-news/ng-interactive/2020/oct/13/arctic-ice-melting-climate-change-global-warming]