Logo for Seabound

Meet an Unreasonable Venture

Seabound

Carbon capture equipment for ships.

Photo of Alisha Fredriksson

Alisha Fredriksson

Co-Founder & CEO at Seabound

More about Alisha »
Employees 6–20
Headquarters London, England, United Kingdom
Seabound is a climate tech startup that builds carbon capture equipment for ships. New regulations from the International Maritime Organization require ships to slash CO2 emissions by 40% by 2030, but emerging clean technology such as hydrogen and ammonia are still 10-20 years away from maturity. Ship-based carbon capture has the potential to rapidly decarbonize shipping because it leverages land-based technology and can be retrofitted onto existing ships. Seabound's equipment sits adjacent to a ship's funnel and traps up to 95% of the CO2 from its exhaust, using patent-pending technology. Once the ship is back in port, the CO2 is offloaded and post-processed before being sold for utilization (e.g. electro-fuels) or for sequestration.

Notable Achievements

  • Built first prototype, capture CO2 at 95% efficiency
  • Secured 6 letters of intent from major shipowners
  • Raised $4.4M seed from Lowercarbon Capital, Y Combinator, Soma Capital, Rebel Fund, Hawktail, Emles Venture Partners, and Collaborative Fund

Currently Operating in Two Regions

Press Mentions

June 5, 2026

Carbon capture startup Seabound was built for the shipping industry. Now, it’s eyeing AI data centres

Read on Tech Funding News »

February 3, 2026

Seabound receives ESA award and completes first full-scale carbon capture units

Read on Dry Bulk »

February 3, 2026

Seabound receives ESA award and completes first full-scale carbon capture units

Read on ajot »

August 20, 2025

Seabound wins £1.1 million UK Government grant for carbon and emissions capture at Port of Southampton

Read more »

August 20, 2025

Seabound wins £1.1 million UK Government grant for carbon and emissions capture at Port of Southampton

Read more »

August 14, 2025

Stoke Space Rebrands Hardware Engineering Platform as Boltline, Reports 2x Revenue in First Half of Fiscal Year

Read more »

More Ventures in Energy & Environment

Get the Unreasonable Newsletter

Get monthly updates on Seabound and all of the other ventures working to solve global challenges.

Read our Privacy Policy.