how did robert ballard discover the titanic?
 In the 1980s Dr. Robert Ballard was determined to discover the Titanic. On several occasions he tried to rally an expedition to find the most famous shipwreck of all time. To him undersea exploration was easy but the Titanic, deep on the Atlantic sea bed would push boundaries further than any deep sea diver had previously gone. 1 Equipment had to be specially designed to withstand the water pressures of the depths they needed to explore. The Titanic would lay at a depth over 13,000 feet. 