The performance of the rubber fender panel is as important as the body of the fender, so 3D modeling and FEM load analysis are essential in order to obtain the best strength.
The fenders distribute the reaction forces to provide low hull pressure and cope with large tidal changes. They can also be designed to resist line loads from belted boats, or even point loads in special cases. In addition to brackets, chains, and strength considerations to ensure high-strength connection points, the panels of the fenders are almost all closed-box design – fully sealed and pressure-checked. Below is the Closed box steel structure and Pressure tested for water tightness.