Look for "Saving the Titanic 2012 subtitles" on reputable sites like Subscene or OpenSubtitles.
To use subtitles with your copy of Saving the Titanic (2012), follow this guide to find, add, and synchronize the files. 1. Finding and Downloading Subtitles
If your video file does not already have built-in captions, you will need to download an external file, typically in format.