Bottle of Champagne that Christened Titanic didn't break
It is considered bad luck when the bottle of champagne used to ‘christen’ a ship fails to break when swung against the hull at launching. However, none of the White Star Line ships was ‘christened’ in this way, so the story is false.
However, one of the Harland & Wolff workers who had to knock out the wooden supports from the hull of Titanic at her launch, was severely injured in this operation and was taken to hospital. He died later of his injuries.