Gaon Cannon

The Gaon Cannon (ガオン砲 Gaon Hō?) is a powerful cannon hidden within the lion's mouth in the prow of the ship, the cannon itself fires a blast of air that resembles an energy beam (just like the non-canonical Goe Goe no Mi). The cannon is aimed in a room within the prow itself. It was first used by Usopp to take out most of the Flying Fish Riders, along with obliterating nearly half of Duval's base.[10] The one drawback of the Gaon Cannon is the amount of cola it takes, 5 barrels in all, three to fire the cannon itself and two to fire a rear cannon, the same one used in the Coup de Burst, to stabilize the ship. This means that the cannon can only be used sparingly.