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Mecha Island is a non-canon island in the first half of the Grand Line. This is the location of The Giant Mechanical Soldier of Karakuri Castle, the seventh One Piece movie.[1]

General Information

Mecha Island contains machines that are more advanced than certain areas of the norm in the world, though most of the people live in normal towns. The island is actually a giant sleeping sea turtle that only wakes up every one thousand years to lay her eggs. Because of this, no Log Pose will point towards it as it does not have any magnetic field, making it impossible to find. The only known way to reach this island is by using a "Turtle Pose", which uses a tiny baby sea turtle as a compass. The island used to be called the Island Turtle (シマガメ Shimagame?) for this reason.[1]

Ratchet rules over this island as the feudal lord, and is the genius scientist who created the advanced machinery around. He intended to use it as his base of operation for world domination, but was ultimately defeated by the Straw Hat Pirates.[1]

Notable Citizens

[v · e · ?]
Mecha Island
Ratchet Honki Maji Roba Gonzo

Boei System

The Boei System (防衛システム Bōei Shisutemu?, literally meaning "Defense System") is an army of robots on Mecha Island that fires arrows. It is owned by Ratchet, and first appeared in Movie 7.[1]


  • Mecha Island has a few things in common with Zou:
    • Both are animals carrying a civilization on their back;
    • Unable to emit the magnetic waves recorded by Log Pose and Eternal Pose, both need an alternative ways to track them;
    • Chopper shows to be able to hear the turtle's voice as Luffy and Momonosuke will do for Zou, but due to different ability.
  • The city on the turtle resembles Greece's cities.


  1. 1.0 1.1 1.2 1.3 1.4 One Piece Movie — The Giant Mechanical Soldier of Karakuri Castle, The battle against Ratchet takes place on Mecha Island.

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