A new documentary about the Titanic reveals details about the ship's final hours using a full-size 3D image and a 'digital twin' of the vessel. The images seem to confirm eyewitness accounts that ship engineers worked until the very end to keep the ship's lights on — resulting in their own deaths.

The luxurious ship struck an iceberg about 400 miles south of Canada about 11:40 p.m. on April 14, 1912, and sank within three hours of the collision.