Saw this earlier, nothing confirmed yet.
2 hrs ago:The search for a missing Argentine submarine with a crew of 44 has entered a “critical phase”, authorities have said, as the seven-day oxygen supply was due to run out today.
Published: 08:31, 22 November 2017: Missing Argentine submarine 'is located by US Navy and a new sonar signal heard' as rescuers race to the spot with oxygen due to run out imminently.
Fingers crossed.
K.