To dream that you are in or see a boat indicates that you are adept at handling your feelings and communicating them to others. Consider the appearance of the water you are sailing on. This can indicate your emotions. Is the water serene, choppy, or stormy? Is it opaque or cloudy? It may also represent your willingness to acknowledge your own personal characteristics and attributes.
To dream that you are trying to jump off a boat implies that you have the desire to tackle your obstacles and deal with troubling feelings.