DNV has granted Approval in Principle for a pioneering Type B tank and multi-fuel containment system design for ships capable of using LNG, methanol or ammonia. The system will change the decarbonization roadmap for Brazilian mining giant VALE SA and has been developed in a joint industry project together with DNV, Norwegian ship designer Brevik Engineering AS and cryogenic insulation solutions provider Passer Marine AS.Fuel choice is one of the most challenging factors shipowners face amid increasing pressure to decarbonize. The flexibility provided by the new system means vessels that VALE charters in future could be adapted to store and consume several different types of fuel. The AiP marks a considerable breakthrough given the system’s potential to improve the decision-making landscape.DNV has long advocated that decarbonization is a shared responsibility and that the industry can accelerate the transition by cooperatively sharing knowledge, technologies and experience.As an independent assessment of a concept within an agreed framework, an AiP confirms that a concept design is feasible and that no significant obstacles exist to prevent it from being realized. DNV's assessment of the VALE system found it to be compliant with all the applicable Ship Rules and Regulations.