By selecting these reactor prototypes and their intrinsic properties, it was concluded that a single nuclear reactor technology is not a solution for the entire maritime industry. The NuProShip II project explores this matter in greater depth.

Preliminary results indicate that the MSR (Molten Salt Reactor) will work best for large vessels using steam turbine installations. The helium-cooled reactor will work best for ships using an electric propulsion system. The lead-cooled reactor will work best in situations where the ship's load is more stable.

The project also studies the skills and qualifications the crew must possess, making the development of a proper education and training system an obviously complex task. This topic was developed under the responsibility of ENIDH. It should be noted that none of the reactor technologies selected in the project have been used at sea to date. The closest existing example is the lead-bismuth cooled reactor, which was used unsuccessfully by the Russian Navy. A very clear
conclusion is that remote monitoring/operation systems must be implemented in these types of ships. Nuclear-powered warships currently in operation have reactor operation crews that are too large for use on any type of merchant vessel, due to crew availability and, ultimately, costs. Therefore, remote monitoring/operations are seen as an essential measure to enable the operation of nuclearpowered merchant ships with lower costs.

As of 2025, the continuation of this project (NuProShip II) entered execution and is currently underway, with a scheduled completion date at the end of 2026, during which the previously described topics will continue to be developed.