Wreck of the RMS Titanic research. The stern section, which had previously received relatively little attention from explorers, was specifically targeted for analysis. The microbial colonies aboard "Titanic" were also a key focus of investigation. The second expedition, from 27 May – 12 June 2004, saw the return of Robert Ballard to "Titanic" nearly 20 years after he discovered it. The expedition spent 11 days on the wreck, carrying out high-resolution mapping using video and stereoscopic still images. 2005 saw two expeditions to the "Titanic". James Cameron returned for the third and last time to film "Last Mysteries of the Titanic". Another expedition searched for
Sinking of the RMS Titanic reduced the rudder's effectiveness, therefore impairing the turning ability of the ship. Had Murdoch turned the ship while maintaining her forward speed, "Titanic" might have missed the iceberg with feet to spare. In 2010, Louise Patten asserted that her grandfather Charles Lightoller claimed that the helmsman Robert Hichens initially panicked and turned the rudder in the wrong direction and that subsequently Bruce Ismay ordered the boat to continue "Slow Ahead" in the belief that "Titanic" was unsinkable. This, allegedly, had never been revealed because of the insurance implications. In the event, "Titanic"s heading changed just in time to avoid a