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Lake Champlain Maritime Museum’s Adam Kane and Pierre LaRocque prepare to dive in Lake Champlain off Charlotte. According to Kane, a grant from the National Center for Preservation Training and Technology of the National Park Service helped fund the upcoming public T.V. dive. (National Park Service photo)

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Divers use sonar to explore Lake Champlain wreck

3D sonar device extends archeologists vision

The 21st century technology of side-scan sonar has come a long way from the 1950s. During the post World War II years, side-scan sonar was invented by researchers at Westinghouse and the U.S. Navy Mine Defense Laboratory in Panama City, Fla.

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