one piece - Is the Ship Spirit (klabautermann) based on any real legend? - Anime & Manga Stack Exchange

In One Piece Chapter 254, Usopp saw someone that fix Going Merry, later in chapter 351, Franky told him that it actually a manifestation of a ship's soul. Is this based on any real legend?

One Piece: Straw Hat Pirates / Characters - TV Tropes

How long is the One Piece Wano arc? - Quora

One Piece - The Romance of Fantasy - The Grand Monet Theory

One Piece Another World of One Piece

Klabautermann, One Piece Wiki

one piece - Is Garp the only Vice Admiral to have a customized ship? - Anime & Manga Stack Exchange

One Piece: Straw Hat Pirates / Characters - TV Tropes

How long is the One Piece Wano arc? - Quora

Klabautermann - Wikipedia

One Piece Another World of One Piece