Seabound
YC W22 ↗London, GB · Founded 2021 · Delaware corporation · 18 employees · 6 known investors
Seabound develops an onboard carbon capture system for maritime vessels that locks CO₂ emissions into solid carbonate pebbles for offloading and storage, enabling shipowners to reduce greenhouse gas emissions from their fleets.
Advanced ManufacturingCleantechClimate TechHard TechClimateTransportationin /seabound/@lishafredycombinator.com ↗

Founders & leadership· Y Combinator alumni (W22)
AF
Alisha Fredrikssonin𝕏Founder
RW
Roujia WeninCo-Founder & Advisor
Investors · 6
Reported raises · per SEC filings
Form D private placements▶$143.9KraisedDec 2023 · 1 investors · Other TechnologyRule 506(b)
▶$143.9KraisedDec 2023 · 1 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Alisha FredrikssonExecutive Officer, Director
- Roujia WenDirector
- Offering amount
- $143.9K
- Amount sold
- $143.9K
- First sale
- Nov 2023
- Incorporated
- Corporation, Delaware, 2021
- Federal exemptions
- 06b
▶$4.4MraisedAug 2022 · 25 investors · OtherRule 506(b)
▶$4.4MraisedAug 2022 · 25 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- Alisha FredrikssonExecutive Officer, Director
- Roujia WenExecutive Officer, Director
- Offering amount
- $4.4M
- Amount sold
- $4.4M
- First sale
- Mar 2022
- Incorporated
- Corporation, Delaware, 2021
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Companies House · registry record
View on Companies House ↗- Registered name
- SEABOUND LIMITED
- Company number
- 07149228
- Status
- Dissolved
- Company type
- Private limited company
- Incorporated
- 8 Feb 2010
- Dissolved
- 21 Jan 2020
- Registered office
- 7 - 9, The Avenue, Eastbourne, East Sussex, BN21 3YA
- Nature of business (SIC)
- 74990 — Non-trading company
- Accounts
- last made up to 28 Feb 2018
Current officers
- Frederick Howard Bird — director, appointed 8 Feb 2010
- Paul Threadgold Smith — director, appointed 8 Feb 2010
Source: Companies House public register · retrieved 24 Jul 2026. Contains public sector information licensed under the Open Government Licence v3.0.
In the news
- Seabound’s Carbon Capture Solution Is “A Valuable Bridge” Towards Net Zero in the Shipping Industryen.reset.org · 2025
- London’s Seabound nets €1.2M UK grant to develop world-first port system tackling carbon and air pollution - Silicon Canalssiliconcanals.com · 2025
- Seabound Receives £1.1M Grant from UK Governmentfinsmes.com · 2025
- Seabound Raises $1.1M Grant Round for Carbon Capture | SignalBasetrysignalbase.com · 2025
- Shipping is one of the world’s dirtiest industries – could this invention finally clean up cargo fleets? | Shipping emissions | The Guardiantheguardian.com · 2025
- Seabound: Carbon-Capture Startup Tackling Shipping-Industry Emissionsbusinessinsider.com · 2023
- Carbon capture is headed for the high seas – TechCrunchtechcrunch.com · 2022
