The Argentine navy has said it has called off the mission to rescue 44 crew members on board a submarine that disappeared two weeks ago. Navy spokesman yesterday said despite the magnitude of the efforts made, it has not been possible to locate the submarine.<br/><br/>The submarine, the ARA San Juan, last made contact on 15 November. Hopes of finding survivors faded after a suspected explosion was reported near its last-known location. Navy spokesman said the search for the submarine had been extended to more than double the number of days that determine the possibilities of rescuing the crew, but added that teams would continue to search for the vessel on the seabed.<br/><br/>More than a dozen countries are still searching for the submarine which went missing on the South Atlantic on a patrol.<br/><br/>Argentina President Mauricio Macri has promised a full investigation.