That was around the same time the ARA San Juan sent out its last signal, reported Reuters. Here’s what we know about the search so far:When did the San Juan last make contact? According to the Argentine navy, such failures are considered routine and the vessel’s crew had been reported safe at the time, per CNN. On Saturday, the Argentine Defense Ministry said it had detected seven communication attempts from the San Juan. Balbi, the Argentine navy spokesman, said the submarine has enough food, water, fuel and oxygen to operate for 90 days without external help.

Source: Huffington Post November 23, 2017 16:52 UTC