Eternal Pose

An Eternal Pose is a special type of compass (written as 永久指針 Eikyū Shishin ["Eternal Compass Needle"], and pronounced "Etānaru Pōsu"), used in the One Piece world. While a Log Pose helps navigate from island to island, an Eternal Pose always points to the same island, no matter how long it stays elsewhere. These are used heavily by those who have a home port on a specific island of the Grand Line, as well as by the Marines. In the 4Kids English dub of the anime, it is called an "Eternal Compass."