An ominous hymn
On Sunday morning, the folks in the church are singing the most beautiful tune – a Navy Hymn called “Eternal Father, Strong to Save.” Rose also sings “for those in peril on the sea” in a close-up. However, while the song is featured in the film, there is no indication that it was performed on the Titanic. Indeed, two survivors later stated that the hymn was absent from the regular Sunday shipboard service. According to The Washington Post, the hymn was later sung that day among second-class passengers during a hymn sing. But that’s not all: the song they sung in the film was written in 1937 for navy aviators, 15 years after the tragedy.
The Houdini move
Houdini may have successfully unlocked himself underwater, but it doesn’t guarantee anyone else can. Jack and Rose had to unlock a metal gate underwater in the frigid ocean water by themselves. How plausible was that? No, not at all. The time it would have taken to unlock a gate with a key while fumbling in icy water would have been enough to cause your fingers to lose function. In actuality, the two could never have made this work.