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The Company JEFA Marine based in Copenhagen produces since 1980 Jefa control systems, rudder bearings and rudder shafts for sailing yachts. During this time they have built more than 10,000 rudder shafts and over 20,000 rudder bearings for shipyards and even individual buildings and One Off Projects around the world. Therefore that rudder systems are made after the special requirements of the customers, the company JEFA Marine has CNC (Computer Numeric Controlled) machines, which ensure the highest precision in the manufacture of the products. JEFA Marine supplies series boatyards worldwide, which have same quality requirements as yards for One Off Projects. Due to high quality and modern CNC machines provides JEFA Marine each customer a solution to his problem at low prices: Quick and easy to install in plastic, aluminum and steel yachts. Easy to maintain: no adjustment and no grease for the lubrication necessary. No match between the rudder shaft and rudder stock (less than 0.05 mm). Cause of the unique needle bearing construction, there is no material wear of the rudder shaft, what a year-long, backlash-free operation guarantees. For more than 19 years, we the KOHLHOFF GmbH represent the company JEFA Navy for the German-speaking area and supply the most shipyards in this region. We offer our customers full service from consulting, specification and the creation of CAD drawings of the rudder system.