She struck where the white and fleecy waves
Looked soft as carded wool,
But the cruel rocks, they gored her side
Like the horns of an angry bull.
--Henry Wadsworth Longfellow, from The Wreck of the Hesperus, 1842
What is "the bow?" Why did the Concordia cruise ship divert from its course to sail past the Giglio island? Investigations shed a light on a Costa Crociere tradition that might be the reason for the liner's wreckage.