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April 4, 2012

Complete map of Titanic debris field provides new clues

SOUTH PORTLAND, Maine — Researchers have pieced together what's believed to be the first comprehensive map of the entire 3-by-5-mile Titanic debris field and hope it will provide new clues about what exactly happened the night 100 years ago when the superliner hit an iceberg, plunged to the bottom of the North Atlantic and became a legend.

Marks on the muddy ocean bottom suggest, for instance, that the stern rotated like a helicopter blade as the ship sank, rather than plunging straight down, researchers told The Associated Press this week.

An expedition team used sonar imaging and more than 100,000 photos taken from underwater robots to create the map, which shows where hundreds of objects and pieces of the presumed-unsinkable vessel landed after striking an iceberg, killing more than 1,500 people.

Explorers of the Titanic — which sank on its maiden voyage from Southampton, England, to New York City — have known for more than 25 years where the bow and stern landed after the vessel struck an iceberg. But previous maps of the floor around the wreckage were incomplete, said Parks Stephenson, a Titanic historian who consulted on the 2010 expedition. Studying the site with old maps was like trying to navigate a dark room with a weak flashlight.

"With the sonar map, it's like suddenly the entire room lit up and you can go from room to room with a magnifying glass and document it," he said. "Nothing like this has ever been done for the Titanic site."

The mapping took place in the summer of 2010 during an expedition to the Titanic led by RMS Titanic Inc., the legal custodian of the wreck, along with Woods Hole Oceanographic Institution in Falmouth, Mass., and the Waitt Institute of La Jolla, Calif.

They were joined by the cable History channel and the National Oceanic and Atmospheric Administration, and the National Park Service is involved in the mapping. Details on the new findings at the bottom of the ocean are not being revealed yet, but the network will air them in a two-hour documentary on April 15, exactly 100 years after the Titanic sank.

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