One Piece Chapter 30, page 10-13: GREAT!!!

Fueled by the hypnotic rage, Luffy unleashes a devastating attack. He winds up his rubber arms and launches a rapid-fire barrage of punches, shouting, "GOMU GOMU... GATLING GUN!!!" A storm of fists rains down on the charging Black Cat Pirates, completely overwhelming them.

Luffy's Gatling Gun sends the hypnotized pirates flying in all directions with a massive blast. Jango and Usopp watch in absolute horror as Luffy's arms stretch and multiply in a blur. Jango stammers, "HIS ARMS..." unable to comprehend the rubber powers of the Straw Hat captain.

Luffy continues his unstoppable rampage, running past the defeated pirates straight toward their ship, the Bezan Black, anchored at the shore. He grabs onto the massive wooden cat-head bow of the ship. Zoro watches in confusion as Luffy grips the bow tightly, straining his muscles.

With a mighty roar of "AAARRGH!!!", Luffy rips the giant cat-head bow completely off the front of the pirate ship. The Black Cat Pirates cry out in terror, "WAAAH! HE'S TAKING OFF THE BOW! HE'S DESTROYING OUR SHIP!!" Jango is sweating profusely, while Nami cheers, "GO! LUFFY!" and Usopp looks on with his mouth hanging wide open.