Cannon Boats are ships found in The Legend of Zelda: The Wind Waker for the GameCube. They travel the Great Sea trying their best to make sure Link doesn't progress any further. They shoot cannons out at Link and The King of Red Lions, and your group can counter by shooting bombs back at them. After you hit one, treasure will usually be left behind. Golden Cannon Boats have a more valuable treasure within, and are usually ones that are required to be destroyed.