Here is the portion of that article that I copied and tells why the Costa Concordia was off course and so close to the Giglio:
The cruise line operator has said Schettino strayed from the ship's authorized course into waters too close to the perilous reef. The navigational version of a "fly by" was apparently a favor to the chief waiter who is from Giglio and whose parents live on the island, local media reported.
Half an hour before disaster struck, the waiter's sister posted an entry on her Facebook page saying she had been told the ship was "going to pass really close" and sending "a big hello to my brother."
Antonello Tievoli, 46, the head waiter of the Costa Concordia, is "tormented by a sense of guilt" over the tragedy, his family said, even though he did not ask the captain to perform the sail-by.
His father, Giuseppe Tievoli, 82, said "Antonello called me to say the ship would be passing by the island at around 9:30 and they would come and give us a whistle to say hello. It was something they often did," he said.
"The ship obviously came too close," he said. "I don't know if Antonello asked the captain to come near, but the responsibility is always and only the captain's."
At 9.08 p.m., the waiter's sister Patrizia Tievoli, a teacher who also lives on Giglio, wrote on her Facebook page: "In just a little while the Concordia is going to pass really close. A big hello to my brother who will finally disembark at Savona to enjoy a bit of rest."
Hours later, after the ship capsized, she wrote: "A tragedy, a deadful tragedy. I can't believe it's true. I just hope I will wake up and realize that it was a nightmare. The longest night of my life."
She later posted a black and white photograph of the Titanic, dated 1912, next to one of the Concordia on its side, dated 2012.
She also passed judgment on the captain's claim that the rocks were not marked on his nautical charts. "Not very convincing at all!" she wrote.
The Milan-based daily Corriere della Sera reported that Schettino called Antonello to the deck to say "Come to see it, Antonello, we're right on top of Giglio!" That was moments before the crash.
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