In two hours time, a memorial service will take place on the North Atlantic, at the precise moment a century ago the Titanic sank.
A cruise ship has sailed to a point directly above the wreck.
Our correspondent Robert Moore is on board with those commemorating the disaster, one hundred years ago.
The ocean is a little rougher, the sky cloudier but this is where we will pay our respects to the ship that sank so tragically 100 years ago
World commemorates 100 years to the day of the Titanic cruise liner disaster.
You only have to gaze across the waters of Halifax harbour in Nova Scotia to imagine the scene.