The Hunt for Red October upon which the movie was based. See also Z-drive L-drive Voith-Schneider Axial fan design Axial-flow compressor Patents ES0293837, ES8300608, ES044150, ES8205166, ES8100010, ES0445822, ES0448660, by Astilleros Españoles (see Espacenet) External links Rolls-Royce Marine Schottel marine propulsion Pleuger Propulsion Voith Schneider propulsors Kort nozzles Tug boat FAQ UltraJet web site ZF Marine Marine propulsion de:Düsenringpropeller