Flag

A Flag is a decorative item that can be placed on any Island Type, and is commonly used to make note of landmarks or to mark previously visited islands.

There are currently three types of flags in the game. Player-crafted flags can be picked up, but the player can't remove Pirate and Merchant flags.

Crafting

 * 1 Wood Log + 1 Cloth Swatch

Other types of Flags

 * Pirate Flag: Indicates a Battlemaster Settlement island containing dangerous pirates.
 * Merchant Flag: This flag shows that there is a merchant on the island.

Trivia

 * The flag is the only customization item that can only be placed on islands, not on boats.
 * Placing a flag on a particularly high mountain lets you complete the "Where everyone can see" Steam achievement.