Liquified Hydrogen Carriers

Another article today on hydrogen transportation vessels:

Now, it could be that I’m just not well-read enough on any of these new hydrogen ships coming out, so if that’s the case then I apologize in advance for my ignorance, but I can’t help but feel like I have yet to see any serious discussion in the shipping trade media about what’s being done on the issues of hydrogen embrittlement, which as I understand it is one of the biggest issues with the storage and transportation of hydrogen. So how have they solved that issue to such a degree that these ship designs are passing class inspections?