Hydrogen: Clean Burning, But Robust Safety Requirements Are Needed

Made with renewable energy, green hydrogen offers shipping a pathway to net-zero, but its high flammability and colorless and odorless nature requires a strong safety regime.
Hydrogen’s high energy content per unit mass makes it a promising alternative to traditional marine fuels. It can be used as an energy source in fuel cells to generate electricity, or directly as a fuel in internal combustion engines.

Global shipping is under increasing regulatory and societal pressure to reduce its...