The rudder blade is the body that generates the rudder force, which is made of wood or steel. Now, except for wooden sailboats, they are all made of steel, and most of them are welded into hollow wings. The joints with rudder stock and rudder pin are made of cast steel. The rudder blade is generally composed of rudder plate, horizontal bulkhead, vertical bulkhead and other parts. In order to improve the water flow behind the propeller, some ships add a streamlined rectifier cap to the ordinary streamlined rudder, which is called the rectifier cap rudder.
Process: cutting, welding, grinding, drilling, bending, etc.