A vessel carrying Russian equipment has arrived at the search zone of the missing S42 submarine ‘San Juan’ in the southern Atlantic, Argentinian Navy spokesman Enrique Balbi said. The Russian deep-water vehicle Pantera Plus is going to survey four possible areas where the sub might have sunk, starting with an unidentified object located at the depth of 477 meters, he said as cited by Todo Noticias. Balbi ruled out the possibility of survivors being discovered aboard due to “extreme conditions and the time that passed.” The ‘San Juan’ submarine has been missing since November 15 with 44 people on board.