Grand Staircase of the RMS Titanic the "Olympic", whose B-Deck aft foyer was much smaller because of additional cabins and storage rooms. There was no reception area on the "Olympic" until the 1913 refit, which expanded the restaurant and added a reception area in emulation of "Titanic". On "Titanic" two additional en-suite staterooms were installed off of the A-Deck aft staircase, decreasing the size of the surrounding foyer in comparison to "Olympic". When Robert Ballard discovered the wreck of the "Titanic" in 1985, he found only a gaping well in the place that the Staircase had once occupied. The deck house that once formed the Boat
Wreck of the RMS Titanic previously unseen pieces of wreckage, and led to the documentary "Titanic's Final Moments: Missing Pieces". RMS Titanic Inc. mounted further expeditions to "Titanic" in 2004 and 2010, when the first comprehensive map of the entire debris field was produced. Two autonomous underwater vehicles – torpedo-shaped robots – repeatedly ran backwards and forwards across the debris field, taking sonar scans and over 130,000 high-resolution images. This enabled a detailed photomosaic of the debris field to be created for the first time, giving scientists a much clearer view of the dynamics of the ship's sinking. The expedition encountered difficulties: several hurricanes passed