The Ox Bell (オックス・ベル, Okkusu Beru) is a sacred bell that is kept in the plaza of Navyford. It was originally on the warship named Ox Lloyd's (オックス・ロイズ号, Okkusu Roizu-gō)
The bell signifies the end of one year and the beginning of another. It is rung eight times to give thanks for the old year, and another eight times to welcome the new year. If it is rung twice, it signifies some sort of disaster or distress.
Monkey D. Luffy infiltrated Navyford to ring this bell. He rang it the traditional sixteen times. The Navy took it as a sign of war, and Killer of the Kid Pirates interpreted the meaning of it as the end of one era and the beginning of another.
However, both parties are incorrect, as Luffy's ringing the bell was only a distraction, along with his other actions, so nobody in the world outside of the Straw Hat Pirates would notice the real message; in the picture of Luffy after ringing the Ox Bell, a tattoo is seen on his arm that reads 3D2Y with the 3D crossed out, representing the amount of time the crew would be separated.
- The Ox Bell is about as tall as Luffy's body.
- It is a common tradition in several cultures to ring a sacred bell during New Year's Eve to thank the old year and welcome the new year. It is usually a church bell that is rung twelve times; in Japan, Buddhist temples ring their bells a total of 108 times to symbolize the 108 human sins in Buddhist belief, and to get rid of the 108 worldly desires regarding sense and feeling in every Japanese citizen.