If dreamed you that you float by the ship and the huge whale approaches you, then in reality you charge yourself with too many duties because of what you risk not to manage to make the most important. If in a dream the whale faced the ship because of what there was a ship-wreck, then in reality the destiny prepared for you a great deal of trouble.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.