Kuuigosu



Kuuigosu (クウイゴス) is a very buoyant wood, used by coated ships to ascend rapidly from the depths of Fishman Island. The speed of the ascent can be altered, depending on how many blocks are dropped.

It was first seen in Chapter 653, when the Straw Hat Pirates used it to travel up to the New World.

Trivia

 * The kana for "Kuuigosu" is backwards for "sugoi uku" (すごい浮く).
 * The reason why Devil Fruit user Mr. 3 was floating in the water during the Alabasta Arc was revealed to be a piece of this wood under him in the water in SBS Volume 66.