Princess Diana's brother on mission to find legendary shipwreck

Lord Charles Spencer took an expedition to find the legendary White Ship, which sank off the coast of France in 1020 and is the subject of his book.
2:31 | 06/16/21

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Transcript for Princess Diana's brother on mission to find legendary shipwreck
and make an appointment or walk in to get yours. Thank you. Diana's brother's new mission. An expedition to find a legendary ship wreck. Our Maggie Rulli got to go on his deep sea adventure. Maggie, good morning. Reporter: Hey, robin, good morning. I can't give away the ending. Let's just say we may have discovered some history ourselves. Princess Diana's brother is a man on a mission. Together with this archaeologist, divers and me were on the first ever expedition to find the legendary white ship. Do you expect to find anything today? Honestly we would be lucky to find something. Reporter: The ship sank off the crew of France. The crew were drunk and they were going too fast. They hit the rock and that was Reporter: He describes this as "Game of thrones" meets "Titanic." It was right here, a mile off the coast of France where the white ship crashed into these rocks and killed almost everyone on board including the heir to the throne of England. What happened next wasecades of civil war. Coming here in the hope of finding a relic from the greatest tragedy that ever happened on sea to the English. This the like Christmas morning. You don't know what's under the That was a very successful dive. It's incredible. We found a piece of ship wreck. Reporter: One more analysis needs to be done to confirm it's the white ship. It was beyond my wildest dream. When the drivers said this is what they had seen, the right configuration of wooden nails and copper and iron. It's incredible. Reporter: The team already has more explorations planned to figure out more about this discovery. The moment those divers came above the surface and said we found a ship wreck it was so cool. Just like lord Spencer said, it's about bringing history back to life. We can feel your excitement, Maggie. It's precious. Thank you. Thank you for bringing that to

This transcript has been automatically generated and may not be 100% accurate.

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