This ebook includes building instructions and programming (using scratch blocks) of a robotic Catamaran, using a single Lego SPIKE Prime kit. The model moves according to the user's commands. The color bricks green, blue, yellow and red are used to move the robot straight, left, right or stop, respectively. The user choose the order of the colored bricks (commands) by placing them in front of the color sensor one at the time. The program adds each one in a list and runs them when the red brick (stop command) appears.