The Costa Concordia struck rocks in shallow water off Italy 's western coast on Friday , killing at least three people , injuring 20 and leaving dozens unaccounted for . Here are five facts about the cruise ship : . 1 . The Concordia is owned by Genoa-based Costa Cruises . It was christened in 2006 , at which point the ship was believed to be the largest cruise ship flying the Italian flag . 2 . The ship weighs in at more than 114,000 gross tonnage and measures 951 feet in length . Its maximum speed was designed to be 23 knots . 3 . Among the amenities on board : a wellness center , five restaurants , 13 bars , four swimming pools and a giant movie screen . The ship has 1,500 cabins . 4 . Its name -- Concordia -- is Italian for concord , or harmony . 5 . About 4,200 people were on board the ship when it ran aground . Most of the passengers were Italian , as well as some French and German citizens . CNN affiliate America Noticias , in Peru , said a group of 32 Peruvians were also onboard . Brazil 's state-run Agencia Brasil said 53 Brazilians were on the cruise ship . An estimated 126 Americans were also on board , according to the U.S. State Department .
The Concordia was christened in 2006 . Hide Caption 1 of 11 Photos:Photos: About 4,200 people were on board the ship when it ran aground .