The removal of such artifacts is particularly discouraging for Ballard, who views the site as a memorial to those who lost their lives in the disaster.
"It's really sad to watch," he said. "The ship deserves much more than this. Can you imagine them doing this kind of thing on the U.S.S. Arizona in Pearl Harbor?"
Edward Kamuda, president of the Titanic Historical Society, also thinks that retrieving artifacts from the site is inappropriate because of the wreck's significance as a memorial gravesite, especially to families of the deceased. "We know of three Titanic survivors who have died and had their ashes scattered on the site," he said.
One of those people, Kamuda noted, was a man named Frank Goldsmith, who was nine years old when he survived the sinking. "His father perished on the ship, so Frank had his ashes scattered on the site," he said.
Because of the historical society's position that the wreck should remain undisturbed, its museum exhibits only artifacts that were saved from the doomed ship by survivors, according to Kamuda.
"Sharing" the Titanic
Barton has a different perspective. "We currently have three exhibitions around the United States," he said. "We want to bring the story of the Titanic to life through exhibits featuring historical vignettes and artifacts recovered from the seabed and painstakingly restored."
He said the company is not allowed to sell artifacts from the ship other than the pieces of coal, which were sold to help cover expedition expenses.
Barton said RMS Titanic sees its mission of recovering the artifacts as a responsibility because the ship is rapidly deteriorating on the ocean floor. "We estimate that the wreckthe bow section at leastwill implode and be destroyed," he said.
But some scientists have estimated that the process could take several hundred years. In an article published by Canadian Chemical News 18 months ago, D. Roy Cullimore and Lori Johnston described the results of their study of the ship's condition. They concluded: "There appears, at this time, to be evidence not of a catastrophic structural failure about to occur in the near future, but rather of a gradual collapse that would follow a somewhat predictable pattern."
Burton argues nevertheless that his company offers an important service by making the history and artifacts of the Titanic widely available. "We want to document, record, and share this special wreck with the world and not just the few fortunate and privileged enough to get down there," he said.
Adventure tourism has entered the picture in recent years, with customers paying steep prices to visit the undersea wreck. By one account, about 100 people have dived to the site, although some of them have been researchers.
Ballard also would like to share the Titanic with others, but favors leaving the site intact and making it widely accessible through technology. "I have no problem with visitors. I think that will increase as the technology does," he said.
"My vision of the future," he added, "is that Titanic will be much like the Arizona or Gettysburg [Civil War battlefield], where people can visit and pay their respects."
He favors outfitting the sunken ship with lights and high-definition digital and video cameras, including some mounted on remotely controlled moveable vehicles. Such a system, he said, would enable people to virtually visit the wreck site via computer and view it closely from many angles.
"These cameras could actually give you a much broader and more complete view" than would be possible by diving to the site in a small submersible, he said, because views of the ship's interior from a submersible would be limited to gazing through a porthole.
Ballard and his team hope to test such a system at the wreck of another ship, the Brittanic, which lies in more accessible waters near Greece. If the approach is found to be effective, such a system could be implemented for the Titanic.
The depth of the Titanic's watery grave that once made it difficult to reach the site is no longer a major problem, thanks to technological advances. "12,000 feet seemed like an incredible depth," Ballard said, "but it's not a great challenge anymore."
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