'A UK-based project has successfully tested the “world’s first” hydrogen-electric boat powered by a printed circuit board fuel cell (PCBFC™).
Funded by the Energy Entrepreneurs Fund as part of the Net Zero Innovation Portfolio, the HyTime project, led by Bramble Energy, recently concluded real-world testing.
Bramble Energy, in collaboration with custom engine builder Barrus, designed a 57ft narrowboat to demonstrate the potential of PCBFC™ technology.'
https://www.energylivenews.com/2024/01/18/uks-first-hydrogen-boat-tests-innovative-fuel-cell-tech/