Ray of hope emerges as 'missing' Titanic tourist submersible vessel emits noises in Atlantic Ocean
World | June 21, 2023 11:32 ISTA statement from the US Coast Guard did not elaborate on what rescuers believed the noises could be, though it offered a glimmer of hope for those lost abroad the Titan as estimates suggest as little as a day’s worth of oxygen could be left if the vessel is still functioning.