Norwegian designer Ulstein has unveiled a revolutionary blueprint for zero-emission cruising using nuclear power.

The yard group said the Ulstein Thor vessel will feature a thorium molten salt reactor (MSR) to generate “vast” amounts of clean, safe energy.

The 149-metre prototype is a first for shipping, but is not a cruise ship itself.

Thor is instead a replenishment, research and rescue vessel that will operate as a mobile power/charging station for a new breed of battery-driven passenger ships.