In general the dream journey is a comment on what is happening in your life, and how you feel about it. It may also relate to undertakings you embark on; new experiences or ways of life you are entering. You can go on the journey of life, a spiritual journey, the journey into marriage, parenthood, etc. The journey cannot be undertaken unless you are willing to travel, to move from one experience, one attitude or way of life to another. So sometimes you meet hesitations or things to do before you can go.
A journey at sea cuts us off from our usual activities. It puts us in closer and inescapable contact with fellow travellers. It also offers the possibility of missing the boat, something that may be irreversible. This all points to how we are always in the midst of enormous natural forces, times and tides of activity. Your sea dreams will indicate your relationship with this.