Item from One Piece by Eiichiro Oda
A compass permanently locked to one specific island's magnetic field. Unlike a Log Pose (which must recalibrate at each island), an Eternal Pose always points to the same destination. Essential for navigating the Grand Line's impossible seas.
Eternal Poses are the difference between freedom and being lost forever on the Grand Line. Standard navigation is impossible here — normal compasses spin uselessly because every island generates its own magnetic field. Log Poses solve this by locking onto the next island's field, but they force crews to follow set routes and require waiting for recalibration at each stop. Eternal Poses bypass all of that: they point to one island, always, regardless of where you are. This makes them incredibly valuable — and strategically important. Destroying an enemy's Eternal Pose can strand them on an island or force them onto a route they didn't choose. Luffy famously destroyed the Eternal Pose to Alabasta that Robin offered, insisting on following the Log Pose's natural route because 'the captain decides where we go.' Nami nearly killed him for it, but it's one of the moments that defined the Straw Hats' philosophy: the journey matters as much as the destination.
An hourglass-shaped glass compass mounted on a wooden base, with a needle that never wavers from its target island. The destination island's name is inscribed on the base. The needle is sealed inside the glass to protect it from the Grand Line's chaotic magnetic interference. Unlike Log Poses, which spin wildly between islands and take hours or days to lock onto a new signal, Eternal Poses are fixed — they always point home, or wherever they're calibrated to.
Also known as: Eternal Pose, Eternal Log Pose