The Van der Velden Group of companies, which includes Barkemeyer GmbH & Kg , has celebrated its 40th anniversary with a change of name. Oceangoing manoeuvring equipment specialists Barkemeyer will henceforth operate under the trade name Van der Velden Marine Systems . The Barkmeyer brand name is associated with its BARKE high-lift flap rudder, Timon flap rudder, conventional and fishtail rudders, and advanced steering gears.