There is an old fantasy film I saw as a kid. The film was in colour and based on the look and feel of the film I would guess anywhere from 50’s to 70’s. It was pretty cliche fantasy plot of a brave worrier trying to save the damsel in distress. I believe there was a sorcerer or witch. The cover had the main male character battling a dragon.

Here is the scene I remember. The main characters are on a ship when they are attached by some type of creatures. The creatures were after the woman. To keep her safe they lock her in the cabin of the ship. As soon as they lock the door the woman turns around and there is a green ghost slowly making his way towards her. She screams but no one can hear her over the battle. That is how the enemy captures her. I know it’s not much to go on but any information would be greatly appreciated. Thank you.