The new SPS93B actuators for the Vector Fins™ are incredibly compact and silent, designed to fit in the smallest available space. The system offers the best boat stabilization available on the market. The actuator is designed to rival gyro stabilizers by offering superior performance at anchor, underway or any speed in between. The very compact, low profile, and efficient actuator allows one to install the SPS93B in the optimal location, usually a guest cabin, for superior stabilizer performance. It is virtually silent.