Patent 7509918 was granted and assigned to Becker Marine Systems Gmbh on March, 2009 by the United States Patent and Trademark Office.
The rudder post (40) for rudders for water vehicles has end sections (41, 42) made of a metallic material, in particular of wrought iron, and a mid post section (45) made of a nonmetallic material connected with the end sections so that the rudder post has a relatively low weight even for a very big length by maintaining a high flexural strength and torsion stiffness.