There are multiple shots of the bridge where the lights above the wings flicker.
This is a reference to the Titanic trying to signal with morse lamps, the Californian, a ship that was in close proximity that night.
In the film's commentary, Cameron mentions that there is a small, barely visible light seen from the see.
That is the Californian closely passing by the Titanic.

Music: My Heart Will Go On (Titanic) Piano Instrumental - Copyright Free Background Music

Time spent making this short:
Finding the detail in the movie: 2 hours
Editing: 2 hours
Script + Voiceover: 1 hours