It is understood that there are many types of rubber fenders on the market, mainly including buckling type, inflatable type, laterally loaded cylindrical type (drum type), butt type V type (ie type X) and flexible pile type. When designing and producing rubber fenders, manufacturers should consider the reaction forces acting on the hull and docking ship components, the deformation of the fenders after absorbing the kinetic energy of the ship, the deformation of the fenders acting on the hull, the relative stiffness of the fenders. The effectiveness of the fender energy absorption during non-positive thrust, the rate at which the fender slows down the ship's berthing speed, the coefficient of friction between the fender system and the hull, the infrastructure investment of the fender system and the support members and their maintenance costs, the hull Many factors such as the way of contact with the fender. Users can choose different types of rubber fenders according to actual conditions. In addition to tugs and small vessels, large tonnage vessels are generally not equipped with rubber fenders. When berthing, mainly use inflatable rubber fenders to protect the wharf and hull.