Dreaming of a submarine indicates we have a spiritual need to understand the depths of our emotions. If we are to be comfortable with ourselves, we need to understand our unconscious urges. Since there can be some fear with this and perhaps a need for protection the submarine becomes quite a potent image. A submarine in dreams indicates the depth of feeling that is accessible to us. Usually we are looking at the subconscious depths rather than the spiritual heights. The entries for Boat/Ship, Deep, Torpedo and Water will provide further information.