Gravity is overlooked
Cameron had to employ a number of techniques in order to make the sinking of the ship appear both realistic and frightening to the spectator. However, one of these camera methods resulted in this strange error. The ship is plainly skewed to one side, but the lifeboat hanging from the side remains perfectly balanced. Because it isn’t how gravity works, it doesn’t look very realistic.
Jack’s hair slicks itself back
There’s no denying Leonardo DiCaprio had great hair back in the Titanic days. In fact, it was so good that it did whatever it wanted. It was tucked behind his ear in one scene, only to suddenly untuck itself in the next. In another scene, Jack is shown wearing his hair naturally one moment and flawlessly slicked back the next, as if he’d used hair gel. Did he just spit to hastily slick back his hair?