Missing Argentine submarine 'is located by US Navy'

Missing Argentine submarine 'is located by US Navy'

The missing Argentine submarine may have been located early this morning, after a US Navy aircraft allegedly detected a 'heat stain' from 230ft below the surface, some 185miles from the coast, and a rescue vessel separately reported hearing a sonar signal.

The ARA San Juan was sailing from Ushuaia to Mar del Plata when it disappeared with 44 crew members last Wednesday, including Argentina's first female submariner Eliana Krawczyk, 35, and Luis Niz, 25, who is due to get married in two weeks time.

The crew's oxygen supply was due to run out this morning as they only had enough on board to last seven days - leaving the international rescue mission racing against time to the spot where the signals were detected.

The ARA San Juan would have enough oxygen for its crew to survive underwater for seven days, if there was no hull breach, according to officials, a time which would have elapsed at 7.30am GMT. 

'We are in the critical phase...particularly with respect to oxygen,' navy spokesman Enrique Balbi said Wednesday. 'There has been no contact with anything that could be the San Juan submarine.'

Experts, however, have said it was possible that the diesel-electric submarine's oxygen supply might last as many as ten days in the case of a battery failure as reported by the boat's captain in his last communication.

Capt. Balbi, added: 'The seven days is not dogmatic. It varies according to the circumstances. As a submariner, I am not losing hope.'

Argentine news report that two separate clues to ARA San Juan's location have been detected. 

A US Navy airplane is said to have recorded 'a 'heat stain', which would correspond to a metal object', some 186miles off the coast of Puerto Madryn, which could be the ARA San Juan,Clarin.com reports. 

The other is a so-called infrasound signal picked up by one of the rescue ships using sonar, the website added. 

Hopes were buoyed earlier this week, after brief satellite calls were received and when sounds were detected deep in the South Atlantic. But experts later determined that neither was from the missing sub.

A U.S. Navy P-8 Poseidon aircraft spotted white flares, but the Argentine navy said they were unlikely to be from the San Juan, which carried red and green flares. The navy said a life raft that was found in the search area early Tuesday didn't belong to the submarine and likely fell off another vessel.

Families have gathered at the Naval Base in Mar del Plata as they anxiously await news of their loved ones, who have now been missing for a week. 

'We feel anguish. We are reserved but will not lose our hope that they will return,' Marcela Moyano, wife of machinist Hernan Rodriguez, told television network TN.

'We're very worried, we have little news, we're waiting for communication,' said Eduardo Krawczyk, father of weapons officer Ms Krawczyk.

'We can make up a thousand movies with happy and sad endings, but the reality is that the days pass by and not knowing anything kills you,' Carlos Mendoza, the brother of submarine officer Fernando Ariel Mendoza said.

'Every minute is oxygen that's worth gold.' 

Many are also taking to social media to express their worries as the search continued into a second week, including Sofi Álvarez, 21, whose brother Luis Niz, 25, is on the ARA San Juan.

She tweeted: 'We are here, all united, awaiting your arrival, 44 families and a very long wait. Do not stop asking, please, do not lose faith, hope. We are not going to stop until we hug them again.'

'It does not matter what god you believe in, or what you believe, I only ask that with a prayer, good vibes, good energies ask for the alive appearance of the crew of the Argentine submarine ARA San Juan, one of them my eldest brother. I'm destroyed.'

Speaking to MailOnline, she added: 'We always talk to him before he leaves port and he did not give us any indication of a breakdown, on the contrary, he told me that in a few days we would see each other.

'He is about to get married in a few weeks.'

From the Vatican, Argentine Pope Francis said he was making 'fervent prayers' for the crew, and prayers have also come from legendary footballer Diego Maradona.

'I want to send strength and hope to all the relatives of the crew of t