Abstract: A stability control system—a dynamic active control system configured for total vessel pitch axis control by fast symmetric deployment of water engagement devices, coupled with engine trim adjustments and total roll and heading control by differentially deploying water engagement devices to counter rolling motions associated with water engagement device delta position. The software module is further configured with a control strategy that limits the bias of the water engagement devices as the marine vessel accelerates or decelerates in order to provide improved stability during marine vessel operation. The control strategy can maintain the bias static within a certain limited configuration (e.g., related to the speed of the marine vessel) until the limited configuration is no longer present.

Abstract: A water engagement actuator system and device comprising a rotary actuator connected to a support structure adapted to be connected to a marine vessel is provided. The rotary actuator includes a driven shaft and a undriven slave shaft disposed opposite the driven shaft. The rotary actuator further comprises at least one pair of bearings enclosed within a clean sealed environment; water engagement device having an arced blade connected to the driven shaft; at least one encoder disposed in a space separating the undriven slave shaft from the driven shaft. A controller is communicatively connected to the rotary actuator to command rotation of the driven shaft such that the water engagement device is automatically moved to a position between a retracted position and a deployed position in order to provide dynamic active control of the marine vessel.

Abstract: A dynamic active control system (DACS) configured for: (1) total vessel pitch axis control by fast symmetric deployment of water engagement devices (WEDs) or controllers, coupled with engine trim adjustments; (2) total roll and heading control by differentially deploying WEDs to counter rolling motions while simultaneously adjusting engine steering position to counter the steering moment associated with WED delta position; and (3) adjustment of the engine steering angle to counter yaw moments produced by gyroscopic stabilization systems.