is one piece episode 324 filler?

Usopp is finally reconciled with the Straw Hat Pirates and has been pulled on-board their new ship. But they remain under attack from Vice Admiral Garp.

Franky orders Zoro to furl up the sails so he can fire up a secret escape mechanism. But before they get underway, Franky insists they name the ship first.

Luffy comes up with a bunch of odd, unsuitable animal combinations. Franky says the name should be based on the masthead, which is shaped vaguely like a lion's head, though most at Galley-La Company "mistook" it for a sunflower.