"Spain and Egypt will start a project later this year to investigate the 19th century sinking of a ship that some believe contained the mummy of a Fourth Dynasty pharaoh..." This refers to the _Beatrice_, sunk 13 October 1838 somewhere between Malta and Cartagena. It wasn't carrying a mummy but rather the sarcophagus of Menkaure (Mycerinus), which had been removed from his pyramid at Giza and was to be delivered to the British Museum.