They’re going to need a bigger boat for Rob Marshall’s entry into the Pirates of the Caribbean series as the fourth film, subtitled On Stranger Tides, has two more crewmates.

Joining Johnny Depp for the next POTC film is British actor Sam Calflin, whose previous roles are comprised of two TV series The Pillars of the Earth and The Lost Future, and director Marshall and Producer Jerry Bruckheimer plucked Claflin to star as a youthful missionary going by the name of Philip and looks certain to be an Orlando Bloom substitute.

Also a recent addition to the cast is French actress Astrid Bergès-Frisbey who is set to play a mermaid in the film, potentially cavorting around the fountain of youth (if that’s still on the cards for the fourth film) and this will be her first English-speaking role.

The film is scheduled to go into production this summer, filming in Hawaii, Los Angeles and here in London.