The developments, presented at the Euronaval trade fair in Paris, include an upgraded mtu submarine charging unit and the mtu NautIQ Master automation system.

The new mtu on-board power generator is powered by a 20-cylinder version of the mtu Series 4000 engine, delivering higher output than its 12-cylinder predecessor. The increased power capability will allow submarines to charge their batteries more rapidly, reducing the time spent on the surface. The compact design also enables two of the new units to replace three smaller generators, freeing up space within the submarine.

The system has been adapted for submarines with modifications to the charge air and combustion systems to maintain stealth.

Rolls-Royce’s study confirms the suitability of the charging unit for integration into modern submarine designs, addressing the rising power demands driven by advanced electronics and enhanced battery technologies.

Rolls-Royce also introduced the mtu NautIQ Master automation system, which consolidates control of propulsion, power supply, and other onboard systems. The automation platform, already in use on naval surface vessels, integrates modules for damage control, navigation, and communications. This provides crews with a unified control interface, streamlining operations.

Rolls-Royce say it has applied its experience with surface vessels to extend the system’s capabilities to underwater platforms, marking a progression in its role from component supplier to solution provider.