How does a ship move in water?

The wheels of vehicles like cars move on the ground but do you know how a ship floating on water moves in water? Water is not a solid thing so wheels do not move in it. There is a propeller called propeller to push the ship forward. The propeller is powered by a petrol or other fuel powered engine.

The propeller remains submerged in the water behind the ship. Its wings have been shown solely to give a sense of proportion. You may have seen the screw. Rotating it due to its twisted diagonal loops, it sinks deeper into the wood. The ship's propeller does the same thing. It is pushed forward by cutting the water. However, due to its force, 90% of the water is pushed back. And the rest of the force propels the ship along the propeller.

The weight of the ship, friction of the side of the ship etc. also hinders the speed of the ship so the propeller has to be kept very large. The propeller usually rotates 30 to 150 knots per minute. Larger ships have propellers with wingspans up to 15 feet [3 m] long. The propeller rotates so fast that the ship does not move fast. Sometimes air bubbles in the water behind the propeller reduce its thrust force. In total, it takes about 50 percent of the propeller's power to propel the ship forward. Thus the ship needs more fuel than the vehicles running on the ground.