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 the submarine off the country's southern coast. (Argentina Navy via AP )