Ghost ship

camera
close up wire indicates horror
pans into a romantic dance indicates romance
Birds eye of the slow dance indicates romance but then a birds eye on the bloody aftermath indicates horror.
The director put the girl in the middle of the screen indicating she is the main character.
sound
seducing music over the top of dancing indicates romance
Switches to echo sounds when things go wrong indicates horror.
Intense, sharp music indicates horror.
Mise En Scene
Luxury props indicates romance.
Big pink writing indicates romance.
Dark and gloomy setting hints to what lies ahead.
Red dress has connotations of romance or contrasting, danger.
Harsh lines all over scenes contrast from soft camera shots.
moonlit blue is used to indicate bad things to come.
Editing
Slow camera while the woman is singing indicates romance.
Mixture of cuts and speed when the wire is unraveling and killing confuses the audience which adds horror to the opening.