 A little later it became the GERS (Groupe d'Études et de Recherches Sous-Marines, = Underwater Studies and Research Group), then the COMISMER ("COMmandement des Interventions Sous la MER", = "Undersea Interventions Command"), and finally more recently the CEPHISMER.In 1947, Chief Petty Officer Maurice Fargues became the first diver to die using an aqualung, while attempting a new depth record with the GERS near Toulon.In 1948, between missions of mine clearance, underwater exploration and technological and physiological tests, Cousteau undertook a first campaign in the Mediterranean on board the sloop "Élie Monnier", with Philippe Tailliez, Frédéric Dumas, Jean Alinat and the scenario writer Marcel Ichac.