UNDATED PHOTO. AP PROVIDES ACCESS TO THIS PUBLICLY DISTRIBUTED HANDOUT PHOTO PROVIDED BY THE ARGENTINA NAVY; MANDATORY CREDIT
This 2014 photo provided by the Argentina Navy shows the ARA San Juan, a German-built diesel-electric vessel, docked in Buenos Aires, Argentina. Argentina's Navy said Friday, Nov. 17, 2017, it has lost contact with its ARA San Juan submarine off the country's southern coast. (Argentina Navy via AP )