Battle of the Masts

Battle of the Masts
	Part of the Arab–Byzantine wars
	; The Battle of the Masts, as portrayed in Tārīkhunā bi-uslūb qaṣaṣī (Our History in a Narrative style), published 1935
Date	655
Location	Off the Lycian coast at Phoenice, Anatolia, Mediterranean Sea; (modern-day Finike) 36°16′55″N 30°15′39″E / 36.281898°N 30.260732°E
Result	Rashidun victory
Belligerents
Rashidun Caliphate	Byzantine Empire
Commanders and leaders
Mu'awiya I; Abu al-A'war; Abdullah Ibn Sa'ad	Constans II
Strength
200 ships	500 ships
Casualties and losses
Light	Almost all

The Battle of the Masts (Arabic: مَعْرَكَة ذَات الصَّوَارِي, romanized: Maʿrakat Dhāt al-Ṣawārī) was a naval battle fought in 655 between the Rashidun Caliphate under the command of Abu al-A'war and the Byzantine Empire led by emperor Constans II (r. 641–668).

The battle was part of the earliest campaign by Mu'awiya, the governor of Syria, to reach Constantinople and is considered to be "the first decisive conflict of Islam on the deep".