Fast Company · Feb 2026
Feature on Seabound’s limestone-based onboard capture approach and its first commercial deployment plans.
Carbon capture equipment for ships
Company research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
Seabound is a UK-based maritime climate-tech startup building retrofit onboard carbon-capture systems for ships. Its core product is a modular, container-sized system that captures CO2 and sulfur from ship exhaust and converts the CO2 into solid limestone/carbonate pebbles for offload and reuse or sequestration.
Primary product
Retrofittable modular onboard carbon-capture system for ships (Seabound Containers)
Founded
2021
Headquarters
London, United Kingdom
Team size
20-30
Work style
Hybrid
Industry
Maritime Transportation
Sub-industry
Onboard carbon capture / maritime decarbonization
Offices
London, United Kingdom
Doncaster, England, United Kingdom (Seabound North R&D)
Business model
hardware/system sales to shipowners
subscription logistics for container/pebble swaps
carbon/limestone off-take and reuse
Funding
Stage
Seed / grant-backed commercialization
Total raised
$10M
Latest round
European Space Agency award · Feb 2026
Latest amount
$1.5M
Feb 2026 · European Space Agency
Aug 2025 · Clean Maritime Demonstration Competition
May 2022 · Lowercarbon Capital
People & investors
Leadership
Co-Founder & CEO
Head of Product Development
Co-Founder & Advisor
Engineering Manager
Commercial & Business Development
Operations, Communications, and Special Projects
Work & culture
Mission-driven, hands-on engineering culture focused on shipping decarbonization, rapid prototyping, and commercial deployment with shipowners and industrial partners.
Work style
Hybrid
Compensation
Public recruiting signal: a posted Head of Business Development role listed £90K-£120K GBP salary plus 0.10%-0.50% equity. No broader compensation bands were publicly disclosed.
Product & market
Pricing
Retrofit hardware sale plus recurring logistics/service subscription; Seabound has also described selling the resulting limestone or CO2 for reuse/sequestration.
Differentiators
- —retrofit system for existing ships without full propulsion replacement
- —container-sized modular units with low onboard space requirements
- —captures both CO2 and sulfur from exhaust
- —decouples capture from regeneration/offload to reduce onboard complexity
- —designed for standard port handling and container swaps
- —can turn captured carbon into saleable limestone or enable closed-loop CO2 reuse
Technology
modular onboard carbon capture
calcium looping
lime-based sorbent capture
containerized 20-foot-module hardware
carbon mineralization to limestone
sulfur removal from exhaust
open-loop and closed-loop CO2 handling
Customers
shipowners
cargo owners
ports
industrial partners
Hartmann Group
Heidelberg Materials
Lomar Shipping
lomarlabs
Hapag-Lloyd
STAX Engineering
Wallenius Wilhelmsen
Competitors
Carbon Ridge
Value Maritime
Wärtsilä
Langh Tech
Aqualung Carbon Capture
The Carbon Removers
Scale & contact
Estimated revenue
$2M-$5M (estimate)
Estimated monthly visits
2.3K
Traffic estimate as of Dec 2024
Latest news
Seabound · Feb 2026
Official announcement of Seabound’s first full-scale units, Doncaster R&D milestone, deployment plans for UBC Cork, and the €1.5M ESA award.
PR Newswire · Aug 2025
Announces CMDC6 funding for Seabound’s port-based carbon and emissions capture project with STAX Engineering and Associated British Ports.
TechCrunch · Jul 2025
Explains Seabound’s project to install its capture system aboard the UBC Cork and use the captured limestone in cement production.
Seabound · Apr 2025
Details Seabound’s integrated emissions-capture demonstration with STAX and positions the company for first full-scale commercial systems.
Jobs and careers at Seabound
0 jobs at Seabound
No open positions
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