Robert Ballard became closely associated with Titanic after co-leading the American phase of the 1985 U.S.–French expedition that located the wreck.
The search involved Woods Hole Oceanographic Institution and the French research institute IFREMER, using different deep-ocean imaging systems in successive phases.
The French team aboard Le Suroit used the SAR side-scan sonar system to search a large grid before the American phase began.
Ballard’s team aboard Knorr used the towed camera-and-sonar vehicle Argo.
Rather than assume the ship would appear as one large intact object, the team looked for a debris trail created during breakup and descent.
Just before midnight on August 31, 1985, scattered debris began appearing in Argo imagery. Early on September 1 a boiler confirmed the wreck area.
The wreck lay in two major sections at roughly 3,800 meters depth, demonstrating conclusively that Titanic had broken apart before reaching the seafloor.
The search technology was being tested for broader deep-ocean scientific purposes. WHOI later emphasized that Titanic’s discovery demonstrated the value of wide-area imaging systems for oceanography.
Ballard advocated treating the site as a maritime memorial and opposed uncontrolled artifact removal.
For TransitSatellite, the story should include the French search phase and Jean-Louis Michel rather than credit the discovery to Ballard alone.