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Explosion heard near where Argentine submarine went missing

MAR DEL PLATA, Argentina — Argentina’s navy announced Thursday that a sound detected during the search for a missing submarine is consistent with that of an explosion — an ominous development in the hunt for the vessel and its 44 crew members.

Navy spokesman Enrique Balbi said that the relatives of the crew have been informed and that the search will continue until there is full certainty about the fate of the ARA San Juan. He said there was no sign the explosion might be linked to any attack on the sub.

Ships and planes returned Wednesday to a search area to check on the noise that experts said could provide a clue to the vessel’s location.

U.S. and specialist agencies said the “hydro-acoustic anomaly” was produced just hours after the navy lost contact with the submarine on Nov. 15.

 

Experts worry that even if the ARA San Juan is intact, its crew might have only enough oxygen to last seven to 10 days.

Balbi said Wednesday that Argentine navy ships as well as a U.S. P-8 Poseidon aircraft and a Brazilian air force plane would return to the area to check out the sound, which originated about 30 miles north of the submarine’s last registered position.

U.S. Navy Lt. Lily Hinz later said the unusual sound detected underwater could not be attributed to marine life or naturally occurring noise in the ocean.

“It was not a whale, and it is not a regularly occurring sound,” Hinz said.

The San Juan, a German-built diesel-electric sub, went missing as it was sailing from the extreme southern port of Ushuaia to the city of Mar del Plata, about 250 miles (400 kilometers) southeast of Buenos Aires.

More than a dozen airplanes and ships are participating in the multinational search despite stormy weather that has caused waves of more than 20 feet (6 meters). Search teams are combing an area of some 185,000 square miles (480,000 square kilometers), which is roughly the size of Spain.

The U.S. government has sent two P-8 Poseidons, a naval research ship, a submarine rescue chamber and sonar-equipped underwater vehicles. U.S. Navy sailors from the San Diego-based Undersea Rescue Command are also helping with the search.

Britain’s Ministry of Defense sent a special airplane with emergency life support pods to join the hunt that includes planes and ships from a dozen nations.

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