Seakeeper Ride 450 - Full Kit w/o Keypad [90685]Ride 450 Full Kit without Keypad Seakeeper Ride controllers are mounted to your boats transom, below the waterline. Using custom, proprietary inertial sensing hardware and software, the system understands how the boat is behaving in all three axes and commands the deployment of the rotary blades to counteract pitch, roll, and yaw. As the blades are deployed, they create lift at the transom, managing the vessels motion instantaneously. Seakeeper Ride