Event 'consistent with an explosion' detected where Argentinian submarine went missing

Hopes for the survival of 44 crew members of the missing Argentine submarine ARA San Juan all but vanished on Thursday as the country’s navy said a “violent event consistent with an explosion” had been detected three hours after the vessel disappeared in the South Atlantic.  Search vessels were combing an area with a 80-mile radius close to the submarine’s last known position, after analysis from the US and Austria revealed a “hydroacoustic anoma