What is an Umayyad caliph?
Umayyad Caliphate
Muawiya was one of the first to realize the full importance of having a navy; as long as the Byzantine fleet could sail the Mediterranean unopposed, the coast line of Syria, Palestine and Egypt would never be safe. Muawiyah along with Adbullah ibn Sa'd the new governor of Egypt successfully persuaded Uthman to give them permission to construct a large fleet in the dockyards of Egypt and Syria[68][69]