Whether in the drives of ship propellers, mobile platforms such as drilling platforms for oil and gas extraction, or also in tidal power plants – the areas of application for disk pack couplings in the maritime industry are diverse. For example, if the main drive of a ship propeller is an electric motor, then spring steel disk pack couplings such as the ROBA®-DS by mayr® power transmission provide decisive advantages. These couplings are robust, reliable and temperature-resistant: they are therefore particularly suitable for use in extreme environmental conditions at sea. Furthermore, the ROBA®-DS couplings are wear-free, i.e. they reduce the maintenance effort required to a minimum. Just as for the previous model ROBA®-D, mayr® power transmission has also received the type approval from the DNV GL (Det Norske Veritas und Germanic Lloyd) for this even more compact and high performance density ROBA®-DS all-steel coupling up to construction size 2200. This certificate confirms the high quality and reliability of the coupling with customary safe dimensioning and design, and ensures the maximum possible operating and functional safety for use on the high seas.