21:06Newshour20/06/2023 20:06 GMT: Authorities race against time to save Titanic subBBC World Service Duration: 50 minutes Tue 20th Jun 2023, 21:06 on BBC World Service Europe and the Middle EastThe US Coast Guard says those on board have about forty hours of oxygen left. Show more GenresNewsFormatsMagazines & ReviewsBrandNewshour Source: BBC Online