Cleavage barring dresses and some kissing but nothing over the top.

This film is deliberately very inaccurate to the real story of The Titanic, there should have been a lot of deaths and lost lives, but there aren't any.

The N-Word is used repeatedly throughout most of the conversation

None of any concern.

Some characters smoke, including a "Sherlock Holmes" ripoff/homage/parody character who smokes a Meerschaum pipe some drinking of wine, although it is never said it is wine and could simply be brown water while trying to put out a fire, a person uses whisky

Although the Titanic is shown breaking apart and sinking, these scenes are quite tame.