Using Newton's Law explain how the propeller moves the boat foward?

A boat propeller rotates ... the blades of the boat propeller push water in one direction causing boat movement in the opposite direction. As the boat propeller pushes water back a vacuum is created on the forward side of each propeller blade. This vacuum pulls on the boat propeller blade and helps move the boat forward. The strength of the vacuum increases as the boat propeller spins faster ... pushing a greater volume of water back ... both effects combining to increase the forward speed of the boat.