Galleys are ancient ships that were primarily propelled by oars and sails, commonly used in the Mediterranean Sea. They played a significant role in naval warfare and trade from antiquity through the Middle Ages, allowing for both speed and maneuverability in battle. These vessels were typically long and narrow, designed to carry a large crew of rowers. Galleys were often adorned with elaborate decorations and could be equipped with various weaponry, making them formidable in naval engagements. Their design and function have influenced many modern naval vessels, showcasing their historical importance in maritime history.