To fall overboard denotes poverty, imprisonment and sickness.
Dream dictionary: overboard dream meanings
…Dreaming of a small boat for recreation or racing, especially an open boat with a mast and sails, or any other boat of this type, only if it is not to for war, indicates hopes, projects, trips, and joys, all depending on how the waters are to know if everything will be happy or tragic. For example, if the waters are turbid and theres a storm threatening to start, its a warning of approaching problems, on the contrary, if the waters are calm and the ship floats smoothly, it indicates that everything will be okay. Dreaming of being in one of these ships, like dinghy, accompanied by several people and that youre afraid of your lives being in danger, indicates that soon a request for help from your friends or family will be received. Dreaming that you fall overboard in a storm warns that you should be careful and…
…Boat signals forecast bright prospects, if upon clear water. If the water is unsettled and turbulent, cares and unhappy changes threaten the dreamer. If with a gay party you board a boat without an accident, many favors will be showered upon you. Unlucky the dreamer who falls overboard while sailing upon stormy waters….