A fender for protecting support structures against shocks applied thereto, of an alongside fender type, comprising a rubber piece with appropriate profile adapted for absorbing the shocks and distributing them uniformly over the structure to be protected, which rubber piece is firmly secured by hot galvanization to a rubber frame whose radius is substantially equal to the radius of the structure to be protected, the assembly formed by the piece carried by a frame being fixed to the structure by fixing member integral with the latter, associated possibly with a fixing member integral with the piece and/or with the frame.