One Cunard ship performs every year a full world circumnavigation, while another goes a 'four continents' world cruise (Europe, Asia, Oceania and Africa).
So far the full circumnavigation has been done for many years by Queen Victoria, but next year this role goes to the brand new Queen Anne. Similarly, the 'four continents' cruise has been done by Queen Mary 2.
However, there will be a 'reverse' in 2026. QM2 will tackle the full circumavigation - a historic point for her, as for the first time ever she will transit the Panama Canal. Anne will undertake the 'four continents' cruise - a first for her, too.