Children like adventure, are curious about the unknown world, and want to explore the truth. The blue color is the color of the sea, and oars and anchors are essential elements of navigation, full of naval style characteristics. They have seen the pirate king, the king of navigation full of blood and passion. They want to become a navigator. They want to take a voyage on the boat immediately, and harvest difficult and warm maritime memories. Children are adventurous, cubic about the unknow n world, and want to find out. Blue is the color of the sea, oars and anchors are essential elements of sailing, full of navy features. I've seen One Piece, this pirate king full of blood and passion. They want to become a navigator, get on the boat and immediately go on a sailing adventure, and harvest difficult and warm sea memories.