To commemorate the exact time the ship sailed from Belfast on 4 April 1912, a special outdoor screening of the classic 1958 Titanic movie 'A Night to Remember' was shown at the city's Dry Dock.
At the time of its construction the Thompson Dock was the biggest Dry Dock in the world, built for the biggest ships in the world.
It’s been described by Belfast author Alf McCreary as the “last footprint on earth of Titanic.”
“Anybody who wants to get a modern idea of how big she was should go to the Thompson Dock.
"The Thompson Dock in Belfast was a long, long, long and deep and wide dock and is the last footprint on earth of Titanic.”
The vessel was 882ft 9in in length, 92 ft in width, 175 ft in height and she weighed 46,328 tonnes.
Bangor man William McQuitty, who produced ‘A Night to Remember based on Walter Lord’s book, witnessed the moment she set sail from Belfast as a child.