Titanic wreck set to be revisited by billionaire to 'prove journey can be made safely' after Titan tragedy
![Titan submarine](https://www.gbnews.com/media-library/titan-submarine.jpg?id=52336973&width=1200&height=800&quality=90&coordinates=250%2C0%2C0%2C0)
An American billionaire is set to visit the Titanic wreck almost a year after a submarine imploded and killed five people
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