Maritime shipping is targeting synfuels or ammonia. Hydrogen is not dense enough for ocean crossing voyages, too much cargo space is lost. They see the writing on the wall.

Approximately 40% of global maritime trade by volume consists of transporting fossil fuels [1] [2], which will be less necessary as renewables and storage scale globally, replacing this consumption and the transportation needed.

[1] https://thelastdriverlicenseholder.com/2022/01/12/almost-40-...

[2] https://unctad.org/system/files/official-document/rmt2019_en...