#Shippropeller #Propeller #Marinepropeller This video shows the biggest ship propellers in the world for propelling a mega cargo or cruise ship. A ship propeller is a rotating fan-like structure which is used to propel the ship by using the power generated and transmitted by the main engine of the ship. The transmitted power is converted from rotational motion to generate a thrust which imparts momentum to the water, resulting in a force that acts on the ship and pushes it forward. Marine propellers are made from corrosion-resistant materials as they are made operational directly in seawater which is a corrosion accelerator. The materials used for making marine propeller are an alloy of aluminium and stainless steel. Other popular materials used are alloys of nickel, aluminium and bronze which are 10~15 % lighter than other materials and have higher strength. The construction process of shipping propellers includes attaching a number of blades to the hub or boss by welding or forging in one piece. Forged blades are highly reliable and have greater strength but are expensive as compared to welded ones. Big ship propeller is constructed by sections of helicoidal surfaces acting together to rotate through the water with a screw effect. In This Video, we had shown some of the biggest ship propellers which are used to propel the mega-ships. ** PLEASE READ THE LAST PROPELLER (NO.1) SIZE AS 10.5 M DIAMETER. SORRY FOR THE TYPO.