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| Four Decades of Alvin |
| On June 5, 1964, three passengers descended to what was then a remarkable depth for this new science research vehicle—about 12 feet. In the four decades since, more than 12,000 people have climbed into the six-foot pressurized sphere. See a photo history. |
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In June 1964, Deep Submergence Vehicle Alvin was commissioned on the Woods Hole Oceanographic Institution dock. The dream of building a human-occupied deep ocean research submersible began eight years earlier, when participants at a symposium in Washington drafted a resolution that the U.S. develop a national program for undersea vehicles. (©Woods Hole Oceanographic Institution)
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