In 1993, 1994, 1996, 1998 and 2000, RMS Titanic Inc. carried out an intensive series of dives that led to the recovery of over 4,000 items in the first two expeditions alone.[47] The 1996 expedition controversially attempted to raise a section of Titanic itself, a section of the outer hull that originally comprised part of the wall of two first-class cabins on C Deck, extending down to D Deck. It weighed 20 tons,[1][49] measured 15 by 25 feet (4.6 m × 7.6 m) and had four portholes in it, three of which still had glass in them.[50] The section had come loose either during the sinking or as a result of the impact with the sea bed.[51][49]