Eternal Pose

Another special type of compass, known as an Eternal Pose (written as 永久指針 Eikyū Shishin ["Eternal Compass Needle"], and pronounced "Etānaru Pōsu"), 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 Navy. In the English dub of the anime, it is called an "Eternal Compass."