What is a ballast pump?

Ballast pumps are a necessity for boaters utilizing ballasts on board their vessels. Ballast pumps are DC motor-driven water pumps that transfer external water into a ballast tank or bag, changing the mass of the boat and displacing the hull deeper in the water. This causes a dynamic change in both the wake size and shape.   
 
Bigger and better waves are the goal for wakeboarders and wake surfers. Wake boats with a ballast system can create the ideal wake for longer rides and more complex stunts.