Which item is NOT part of the signaling devices carried in each life raft?

The signaling devices carried in each life raft are crucial for ensuring visibility and communication during emergency situations at sea. Among these items, a dye marker, flare, and signal mirror are all standard components that serve specific purposes in signaling for rescue.

A dye marker is used to create a highly visible signal in the water, making it easier for search and rescue teams to locate individuals. Flares are pyrotechnic devices that produce bright light and smoke to attract attention from a distance, especially at night. A signal mirror reflects sunlight in a concentrated beam, allowing the operator to signal ships or aircraft effectively.

In contrast, a pirate signal flag is not a standard item found in life rafts and does not serve the practical purpose of signaling for rescue. Instead, it might serve a decorative or thematic purpose unrelated to emergency signaling. Therefore, this option stands out as the one that does not belong in the context of equipment designed to enhance survival and aid in rescue operations.