Hydrogen (H₂) is anticipated to play a vital role in the transition to a climate-neutral world due to its zero-carbon emissions and the potential for production from renewable resources. Maritime transport can enable bulk shipping of H2 over long distances, with the most efficient option being through liquefaction of H2 (-253 ℃ at atmospheric pressure), since liquid hydrogen (LH2) occupies approximately 1/800th the volume of its gaseous phase. The storage and maritime transportation of hydrogen, however, present regulatory challenges, particularly regarding the evaluation of materials performance and the material testing procedures – gaps that remain unaddressed by the current regulatory framework. This paper reviews international regulations, classification societies rules and international standards to identify key regulatory gaps that hinder the development of safe and reliable LH2 containment systems. A major outcome of the review is that limited standards for material compatibility assessment in LH2 conditions are available, compared to standards dedicated to gaseous H2. While many standards identify specific materials that are deemed suitable for use in hydrogen application, such as stainless steels and aluminium alloys, comprehensive and systematic testing procedures for material compatibility evaluation in LH2 conditions are still lacking. Some classification societies, however, have begun addressing this gap with valuable guidelines.