The controllable pitch propeller (CPP) can be effective in the full range of speed and load conditions, because its pitch will change to absorb the maximum power that the engine can produce. When the ship is fully loaded, it obviously needs more propulsion than when it is empty. By changing the propeller blade to the optimum pitch, higher efficiency can be achieved, thus saving fuel. Ships equipped with VPP can accelerate faster and decelerate more effectively from the static state, making parking faster and safer. CPP can also improve the ship's mobility by guiding stronger water flow to the rudder. Its characteristics are excellent operability and economy. Minimize noise and vibration levels. Advantages in ship control. Propellers can be driven by electric motors, diesel engines and hydraulic motors.