Log Pose

A Log Pose (記録指針, Rogu Pōsu, can be read as Kiroku Shishin, lit. "Logbook Compass Needle", "Grand Compass" in the 4Kids Entertainment Dub) is a fictional, compass-like navigational device; a necessity for traveling the Grand Line. It is a wrist watch with an orb sitting on top, and a needle floating inside the middle of that orb. Normal compasses don't work in the Grand Line due to the special magnetic waves created from each island. The Log Pose functions by recording the magnetic wave of an island in the Grand Line, and points to the next island for the user to travel to. How long it would take to lock onto the magnetic waves varies from island to island. Once on an island for the required amount of time, the recording of the magnetic wave resets to accommodate the new island.

A variation of the Log Pose is the Eternal Pose.

People
The people seen so far with a Log Pose are:

Portgas D. Ace

Nami

First Appearance
Chapter 104; Episode 63