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معركة ذات الصواري
The Battle of the Masts, known in Arabic as Dhat al-Sawari, took place in 34 AH (655 CE) off the coast of Lycia in the eastern Mediterranean. It stands as the first major naval victory in Muslim history and one of the most decisive maritime engagements of the ancient world. The battle shattered Byzantine naval dominance and marked the emergence of the Muslim state as a formidable sea power.
The rapid Muslim conquests of Egypt and the Levant under the Rashidun Caliphate had brought the coastlines of the eastern Mediterranean under Islamic governance. Yet the Byzantine Empire still commanded the seas, using its powerful navy to raid Muslim coastal towns and threaten supply lines. The vulnerability of Muslim ports became apparent through repeated Byzantine naval raids on Alexandria and other coastal settlements.
Mu'awiyah ibn Abi Sufyan, then governor of Syria, recognized that the Muslim state could not secure its conquests without contesting Byzantine control of the sea. He sought permission from the Caliph Uthman ibn Affan to build a navy. Uthman initially hesitated, reportedly concerned about the dangers of the sea for Muslim soldiers. According to al-Tabari, Mu'awiyah assured the Caliph that the distances were short and the risk manageable. Uthman granted permission on the condition that no one be compelled to serve at sea.
The Muslims constructed shipyards along the Syrian and Egyptian coasts, drawing on the expertise of local Coptic and Syrian shipbuilders. Within a few years, a capable fleet had been assembled. An early naval expedition captured the island of Cyprus in 28 AH (649 CE), demonstrating that the Muslims could operate effectively at sea.
The Muslim fleet sailed under the overall command of Abd Allah ibn Sa'd ibn Abi Sarh, the governor of Egypt, with support from ships dispatched by Mu'awiyah from the Syrian coast. The combined Muslim fleet numbered approximately two hundred vessels, though sources vary.
The Byzantine Emperor Constans II personally commanded his fleet, assembling what the sources describe as a massive armada of between five hundred and one thousand ships. The Emperor intended to deliver a crushing blow that would end the Muslim naval threat permanently and reclaim lost territories.
The two fleets met near the Lycian coast, in waters the Arabs called Dhat al-Sawari, "the place of the masts," so named for the forest of masts visible when the two great fleets converged. The sight of the enormous Byzantine armada was imposing, and the Muslim commanders understood that a conventional sea battle against such numbers would be difficult.
Abd Allah ibn Abi Sarh and his commanders devised a bold strategy. They ordered their ships to close directly with the Byzantine vessels and lash them together, ship to ship. By chaining and grappling the vessels to one another, they transformed the naval engagement into what was essentially a land battle fought on the decks of ships. This tactic neutralized the Byzantine advantage in seamanship and numbers, playing instead to the strength of Muslim soldiers in close combat.
The fighting was fierce and prolonged. Ibn Kathir records that the sea turned red with blood and the water was filled with the dead. The Muslim fighters, experienced in hand-to-hand warfare from years of land campaigns, proved devastating in the boarding actions. The Byzantine lines broke, and their fleet was routed.
The defeat was catastrophic for Byzantium. Emperor Constans II barely escaped with his life, reportedly disguising himself by exchanging clothes with a common sailor and fleeing on a small vessel. Much of his fleet was destroyed or captured. Byzantine naval supremacy in the eastern Mediterranean, maintained for centuries, was broken in a single day.
The victory opened the sea lanes to Muslim shipping and commerce, secured the coastlines of Egypt and the Levant from Byzantine raids, and laid the foundation for further Muslim naval expansion across the Mediterranean in the decades and centuries that followed.
The Battle of the Masts holds a place among the most consequential naval engagements in history. It demonstrated that the early Muslim state possessed not only military prowess on land but the capacity to project power across the sea. The innovative tactic of grappling ships together became a model studied by later Muslim and even European naval commanders.
From a broader perspective, Dhat al-Sawari represented a turning point in Mediterranean history. For the first time, a power other than Rome or its Byzantine successor controlled the eastern sea. The battle accelerated the transformation of the Mediterranean from a Byzantine lake into a contested space, a shift that would shape the political geography of Europe, North Africa, and the Near East for centuries to come.
The courage of the Muslim sailors, many of whom had never fought at sea before that generation, is remembered as an example of trust in Allah and willingness to meet challenges beyond familiar ground. The Prophet Muhammad had himself spoken of those who would ride the seas in the cause of Allah, and the companions who participated in these early naval campaigns saw themselves as fulfilling that promise.
For the Prophetic era, see the Seerah timeline.