Page 36: of Marine Technology Magazine (March 2020)

Marine Drones t 7:19 a.m., local time, families of those presumed dead want- Despite this clue, it would turn into one on November 15, 2017, ed to know what had happened. It was of the most challenging searches.

the last message was re- thought the submarine had encountered ceived from the San Juan a problem with the forward batteries, Reducing the ellipse

Asubmarine. She belonged but little information was available. “The challenge for the searchers was to the Argentinian navy and was on a An initial search proved futile. There that the acoustic anomaly had a large routine mission from Ushuaia in the Pa- was little to go on, except an unusual sig- ellipse,” Rear Admiral Nick Lambert, tagonia region to Mar del Plata in Bue- nal detected by two of 11 Comprehen- Ocean In