A steamship is traditionally read as old-fashioned power and steady progress, driven by heat kept burning below deck. It can stand for nostalgia, or for ambition fuelled by feelings that have been working out of sight.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.