Pirate flags, often known as "Jolly Roger," were used by pirates to identify themselves and intimidate their targets. These flags typically featured a skull and crossbones, symbolizing death and danger. Different pirate crews sometimes designed their own unique flags, incorporating various symbols to represent their identity or intentions. The use of pirate flags dates back to the 17th century during the Golden Age of Piracy. These flags served both practical and psychological purposes, signaling that a ship was a pirate vessel. The sight of a Jolly Roger often instilled fear in merchant ships, prompting them to surrender without a fight.