The show must go on. And it is a potential world tour being planned by a so-called 'hardcore' theatre collective on a converted cargo ship with a modern emissions-cutting sail to spread a message about the climate emergency.

An 18-metre-high eSAIL has been fitted on the Barcelona-based La Fura dels Baus theatre company's 1,160-dwt ship La Naumon (built 1979) ahead of a delayed tour of Spanish ports that the producers would like to expand around the world.