Wreck of the RMS Titanic but have been consumed by other organisms. "Titanic" sank in 1912, when she collided with an iceberg during her maiden voyage. Numerous expeditions tried using sonar to map the sea bed in the hope of finding it, but were unsuccessful. In 1985, the wreck was finally located by a joint French–American expedition led by Jean-Louis Michel of IFREMER and Robert Ballard of the Woods Hole Oceanographic Institution. The wreck has been the focus of intense interest and has been visited by numerous expeditions. Controversial salvage operations have recovered thousands of items, which have been conserved and put on public display.
Wreck of the RMS Titanic day of the expedition, an object that looked like a propeller was found. Grimm announced on his return to Boston that "Titanic" had been found, but the scientists declined to endorse his identification. In July 1983, Grimm went back a third time with Ryan aboard the research vessel "Robert D. Conrad" to have another look at the "propeller". This time nothing was found and very bad weather brought an early end to the expedition. It later turned out that Sea MARC had actually passed over "Titanic" but had failed to detect it, while Deep Tow passed within of the wreck.