Riding The Ship
Scholars have said that riding a ship in the sea has various interpretations depending on the dreamer's situation. It may indicate a non-believer's conversion to Islam, a sinner's repentance, a poor person's wealth, or a sick person's recovery. If a student of knowledge rides it, it may signify companionship with a scholar or gaining knowledge that saves them from ignorance.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam