A team of underwater archeologists, maritime engineers, technicians and explorers as they try to do what’s never been done before: document every inch of the debris field where the Titanic sank on April 15, 1912. NBC News' Kerry Sanders is with the scientists aboard the Jean Charcot research vessel in the North Atlantic.

The live chat is now over, but please read Sanders and Titanic historian Parks Stephenson's responses to reader's questions about the research expedition.

Video: Scientists 3D scan the Titanic before it disintegrates


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