self-propelled ships

Airbus is designing a self-propelled vessel to pick up the Martian specimen that is transported to Earth
In April, NASA and the European Aeronautics Agency (ESA) announced to work together to find a way to bring the sample on Mars to Earth.
NASA develops a new generation self-propelled vessel to explore Mars by 2020
It is expected that this unmanned self-propelled vessel will be launched on Mars in July and August 2020.
New unmanned hi-tech ships will be built
In the next four years, Rolls-Royce will launch its own fully-featured cruise ship. It is also considered the first unmanned vessel in the world.