Lürssen (or Lürssen Werft) is a German shipbuilding company based in Bremen-Vegesack. Lürssen designs and constructs yachts, naval ships and special vessels. Trading as Lürssen Yachts, it is one of the leading builders of custom superyachts such as Paul Allen's Octopus and Larry Ellison's Rising Sun, the largest privately owned yacht in the world. Naval ships built by Lürssen include: Lürssen is currently also involved with the building of Braunschweig class corvettes and is part of the ARGE F125 joint-venture designing the F125 class frigate.