Decarbonizing shipping.
Big Picture
Ships are the arteries of the global economy, and bunker fuel is what flows through them. The nasty, sludgy oil byproduct powering nearly 100,000 cargo, tanker, and bulk carriers spews more emissions than all the world’s planes combined. Green fuels hold promise, but achieving the IMO’s goal of cutting 40% of ship emissions by 2030 will require abating the fleets already crossing oceans today.
How it Works
Seabound’s onboard carbon capture device traps up to 95% of CO₂ from a ship’s exhaust. The ship’s flue gas routes through a reactor to bind with carbon dioxide molecules to form limestone pebbles. The pebbles are offloaded when the ship docks and post-processed on shore, yielding fresh pebbles for reuse and pure CO₂ streams that can be sold to cover installation and turn pollution into profit.
Unfair Advantage
Seabound combines low-cost materials and novel reactor design that minimizes space onboard and avoids costly on-site processing. Together, this slashes the cost of carbon capture for ships by 10x. Transporting the carbon as solid carbonate pebbles reduces CO₂ transport costs by roughly 12x and eliminates the need for specialized offloading equipment on the ships or infrastructure at the ports.
10
Times cheaper
carbon capture for ship exhaust

ALISHA FREDRIKSSON CEO & CO-FOUNDER
Alisha previously founded Generation’s climate program, an electro-fuel startup, and a climate activist group.

ROUJIA WEN CTO & CO-FOUNDER
Roujia previously built ML products for Amazon Alexa, and completed a master’s in Theoretical Physics at the University of Cambridge.
Cracking the code on maritime carbon capture
Seabound
Don’t Expect to Fix the Climate From a Cushy Office
Lowercarbon Capital
Turning the Tide on Maritime Shipping
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