It is possible to move by parts with an adequate degrees of freedom, to minimize the pressure on the corners of the bearing interior and to interconnect all parts in a structure or manner in the piston formation where the link or hinge pin is formed in the friction bearing. In order to minimize wear on all parts of the entire system, the rudder and rudders, which are guided by the main rudder and hinged to the main rudder, are provided by the rudder, the sliding piston joints of the friction bearings for the slewing pins, to minimize wear on the offshore rudder. It is to include.
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