The submersible that first took humans to the Titanic wreck has made more than 5,000 dives. A researcher who has been on the Alvin 53 times says it's nothing like the Titan.

2 years ago 24

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3. The submersible that first took humans to the Titanic wreck has made more than 5,000 dives. A researcher who has been on the Alvin 53 times says it's nothing like the Titan.