A cliff indicates that you rationalize with regard to the subject matter of the dream. This may be life in general, if a boat journey or water is the main subject of the dream. Cliffs are up a height from sea level and this symbolizes your consciousness being up in your head and away from your heart. The purpose of the dream is to point out your rationalizing nature and ask you to move your center of consciousness downwards towards your heart – listen to your heart more.
On a cliff and looking out to sea can also be about your spiritual nature and what you must overcome to achieve your life purpose.
