# Ocean Tech Market Map United Kingdom 2026: 55 Startups in 6 Segments > 55 ocean tech startups in the United Kingdom, mapped in 6 segments: shipping and ports, ocean data and robotics and seaweed and algae and more. Source: https://millionrounds.com/market-maps/ocean-tech-united-kingdom-market-map (Millionrounds; every figure on the page links to its filing or article) ## Shipping and ports 23 - [Boats.com](https://millionrounds.com/company/boats-com) - [Ambassador Cruise Line](https://millionrounds.com/company/ambassador-cruise-line) - [RAD Propulsion](https://millionrounds.com/company/rad-propulsion) - [Arksen](https://millionrounds.com/company/arksen) - [ACUA Ocean](https://millionrounds.com/company/acua-ocean) - [MLA College](https://millionrounds.com/company/mla-college) - [Zelim](https://millionrounds.com/company/zelim) - [Signol](https://millionrounds.com/company/signol) - [Online Oceans](https://millionrounds.com/company/online-oceans) - [Inyanga Marine Energy Group](https://millionrounds.com/company/inyanga-marine-energy-group) - [Ceto](https://millionrounds.com/company/ceto) - [ShipServ](https://millionrounds.com/company/shipserv) - [Armada Technologies](https://millionrounds.com/company/armada-technologies) - [HonuWorx](https://millionrounds.com/company/honuworx) - [Aiber](https://millionrounds.com/company/aiber) - [Abingdon](https://millionrounds.com/company/abingdon) - [Spot Ship](https://millionrounds.com/company/spot-ship) - [Smart Green Shipping](https://millionrounds.com/company/smart-green-shipping) - [Portunus Solutions](https://millionrounds.com/company/portunus-solutions) - [SailTies](https://millionrounds.com/company/sailties) - [Guardian Maritime](https://millionrounds.com/company/guardian-maritime) - [Safeguard Engineering](https://millionrounds.com/company/safeguard-engineering) - [Chartwell Marine](https://millionrounds.com/company/chartwell-marine) ## Ocean data and robotics 10 - [Enshore](https://millionrounds.com/company/enshore) - [XLCC](https://millionrounds.com/company/xlcc) - [Vaarst](https://millionrounds.com/company/vaarst) - [Magma Global](https://millionrounds.com/company/magma-global) - [HCS Control Systems](https://millionrounds.com/company/hcs-control-systems) - [Spex Group](https://millionrounds.com/company/spex-group) - [Orca Hub](https://millionrounds.com/company/orca-hub) - [ScrubMarine](https://millionrounds.com/company/scrubmarine) - [Sentinel Subsea](https://millionrounds.com/company/sentinel-subsea) - [InX Tech](https://millionrounds.com/company/inx-tech) ## Seaweed and algae 9 - [Notpla](https://millionrounds.com/company/notpla) - [OCEANIUM](https://millionrounds.com/company/oceanium) - [Samudra Oceans](https://millionrounds.com/company/samudra-oceans) - [Brilliant Planet](https://millionrounds.com/company/brilliant-planet) - [Kelpi](https://millionrounds.com/company/kelpi) - [Algapelago](https://millionrounds.com/company/algapelago) - [BioMara](https://millionrounds.com/company/biomara) - [Seaweed Generation](https://millionrounds.com/company/seaweed-generation) - [*AK* Atlantic Kitchen](https://millionrounds.com/company/atlantic-kitchen) ## Ocean energy 6 - [Pentland Floating Offshore Wind Farm](https://millionrounds.com/company/pentland-floating-offshore-wind-farm) - [Corio Generation](https://millionrounds.com/company/corio-generation) - [Caudal Energy](https://millionrounds.com/company/caudal-energy) - [NeuWave Technologies](https://millionrounds.com/company/neuwave-technologies) - [Xmoor](https://millionrounds.com/company/xmoor) - [First Marine Solutions](https://millionrounds.com/company/first-marine-solutions) ## Aquaculture and fisheries 4 - [WellFish Tech](https://millionrounds.com/company/wellfish-tech) - [WellFish Diagnostics](https://millionrounds.com/company/wellfish-diagnostics) - [PlantSea](https://millionrounds.com/company/plantsea) - [Aquanzo](https://millionrounds.com/company/aquanzo) ## Ocean carbon and restoration 3 - [Waterhaul](https://millionrounds.com/company/waterhaul) - [FlexSea](https://millionrounds.com/company/flexsea) - [OceanSaver](https://millionrounds.com/company/oceansaver) ## Segment by segment ### Shipping and ports 23 startups · $175M raised - [**Boats.com**](https://millionrounds.com/company/boats-com) boats.com is the leading online marketplace for buying or selling a boat. United Kingdom $32M - [**Ambassador Cruise Line**](https://millionrounds.com/company/ambassador-cruise-line) Ambassador Cruise Line's purpose is to inspire and delight every guest to enjoy an authentic cruise experience effortlessly, & sustainably. United Kingdom $23M - [**RAD Propulsion**](https://millionrounds.com/company/rad-propulsion) RAD Propulsion is a marine technology company based in Sarisbury Green, Hampshire, UK, founded in 2018 by engineers Rich Daltry and Dan Hook. United Kingdom $23M - [**Arksen**](https://millionrounds.com/company/arksen) Arksen is a UK-based marine adventure company founded in 2017 by Jasper Smith. United Kingdom $16M - [**ACUA Ocean**](https://millionrounds.com/company/acua-ocean) We design, develop and deploy hydrogen- powered uncrewed surface vessels (H-USVs) United Kingdom $15M - [**MLA College**](https://millionrounds.com/company/mla-college) MLA College is an education center that specializes in distance learning courses for the marine and maritime sectors. United Kingdom $13M - [**Zelim**](https://millionrounds.com/company/zelim) Zelim is a global maritime technology company based in Edinburgh, UK, focused on enhancing search and rescue (SAR) operations at s United Kingdom $11M - [**Signol**](https://millionrounds.com/company/signol) Signol is a London-based company specializing in workforce nudge technology and behavioral science. United Kingdom $9.3M ### Ocean data and robotics 10 startups · $224M raised - [**Enshore**](https://millionrounds.com/company/enshore) Enshore is a UK based subsea trenching company, providing seabed intervention services to mega-projects across industry around the world. United Kingdom $138M - [**XLCC**](https://millionrounds.com/company/xlcc) XLCC will establish a new, export-led, green industry in the Uk: world class HVDC subsea cable manufacturing. United Kingdom $27M - [**Vaarst**](https://millionrounds.com/company/vaarst) Vaarst develops robotic analytic solutions for marine applications. United Kingdom $20M - [**Magma Global**](https://millionrounds.com/company/magma-global) Magma Global designs and manufactures m-pipe, a high performance solution for risers and jumpers in subsea oil and gas transfers. United Kingdom $14M - [**HCS Control Systems**](https://millionrounds.com/company/hcs-control-systems) HCS Control Systems is an engineering company that designs and manufactures subsea equipment for the oil and gas sector. United Kingdom $13M - [**Spex Group**](https://millionrounds.com/company/spex-group) SPEX Group is an oil and gas technology company based in Aberdeen, UK, founded in 2009. United Kingdom $7.6M - [**Orca Hub**](https://millionrounds.com/company/orca-hub) ORCA Hub is a multi-university research program and consortium established in 2017, focusing on Robotics, Artificial Intelligence United Kingdom $3.5M - [**ScrubMarine**](https://millionrounds.com/company/scrubmarine) ScrubMarine develops robotic systems for hull cleaning, inspection, and offshore maintenance using cavitation technology. United Kingdom $994K ### Seaweed and algae 9 startups · $142M raised - [**Notpla**](https://millionrounds.com/company/notpla) Notpla is a London-based sustainable packaging startup founded in 2014 by Rodrigo García González and Pierre Paslier. United Kingdom $89M - [**OCEANIUM**](https://millionrounds.com/company/oceanium) Oceanium develops innovative, all-natural food and nutraceutical products and sustainable materials from sustainably-sourced seaweed. United Kingdom $19M - [**Samudra Oceans**](https://millionrounds.com/company/samudra-oceans) Samudra Oceans is a London-based climate technology startup founded in 2022, focused on advancing ocean farming and blue carbon capture. United Kingdom $14M - [**Brilliant Planet**](https://millionrounds.com/company/brilliant-planet) Brilliant Planet is a climate technology company based in London, founded in 2013. United Kingdom $12M - [**Kelpi**](https://millionrounds.com/company/kelpi) Kelpi is a UK-based sustainable materials innovation company founded in 2020. United Kingdom $5.5M - [**Algapelago**](https://millionrounds.com/company/algapelago) Algapelago is a regenerative ocean farming company founded in 2021, focused on creating sustainable seaweed forests. United Kingdom $807K - [**BioMara**](https://millionrounds.com/company/biomara) BioMara is a Scottish biotechnology company founded in 2022, based in Edinburgh. United Kingdom $653K - [**Seaweed Generation**](https://millionrounds.com/company/seaweed-generation) Seaweed Generation is a developer of robotic technologies to harness the power of seaweed cultivation systems to counteract climate change. United Kingdom $365K ### Ocean energy 6 startups · $273M raised - [**Pentland Floating Offshore Wind Farm**](https://millionrounds.com/company/pentland-floating-offshore-wind-farm) Pentland Floating Offshore Wind Farm energy infrastructure, including offshore wind, onshore wind, solar photovoltaic (PV). United Kingdom $196M - [**Corio Generation**](https://millionrounds.com/company/corio-generation) Corio Generation is a London-based offshore wind developer, established in 2022 and part of the Macquarie Group. United Kingdom $70M - [**Caudal Energy**](https://millionrounds.com/company/caudal-energy) Caudal Energy is a UK-based renewable energy startup and an Oxford University spinout, founded in 2024. United Kingdom $5.8M - [**NeuWave Technologies**](https://millionrounds.com/company/neuwave-technologies) NeuWave Technologies is a Manchester-based company that specializes in AI-driven environmental intelligence for offshore and marit United Kingdom $1.0M - [**Xmoor**](https://millionrounds.com/company/xmoor) Xmoor specializes in machine learning-powered tools for rapid dynamic analysis of floating offshore structures. United Kingdom $533K - [**First Marine Solutions**](https://millionrounds.com/company/first-marine-solutions) First Marine Solutions (FMS) is an international energy service and equipment company based in Aberdeen, Scotland. United Kingdom $434K ### Aquaculture and fisheries 4 startups · $9.5M raised - [**WellFish Tech**](https://millionrounds.com/company/wellfish-tech) WellFish Tech is a biotechnology and aquaculture-diagnostics company based in Paisley, Scotland. United Kingdom $6.8M - [**WellFish Diagnostics**](https://millionrounds.com/company/wellfish-diagnostics) WellFish Diagnostics is on a mission to enhance the sustainability of the aquaculture industry. United Kingdom $1.6M - [**PlantSea**](https://millionrounds.com/company/plantsea) PlantSea manufactures and develops sustainable products using seaweed and aquaculture materials. United Kingdom $709K - [**Aquanzo**](https://millionrounds.com/company/aquanzo) Aquanzo is a marine protein farming company that challenges the exploitation of the ocean to produce marine ingredients for the aq United Kingdom $361K ### Ocean carbon and restoration 3 startups · $5.2M raised - [**Waterhaul**](https://millionrounds.com/company/waterhaul) Waterhaul is a social enterprise based in Cornwall, United Kingdom, founded in 2018 by marine scientist Harry Dennis. United Kingdom $1.9M - [**FlexSea**](https://millionrounds.com/company/flexsea) FlexSea develops novel biomaterials derived from renewable marine resources to replace current primary plastic packaging. United Kingdom $1.8M - [**OceanSaver**](https://millionrounds.com/company/oceansaver) OceanSaver is a UK-based eco-friendly cleaning brand founded in 2018 by John Buitekant. United Kingdom $1.5M **How this map is made.** Every startup here has raised money in rounds we track, and is based in United Kingdom. It joins the map when its sectors, read from its rounds, or the opening of its own description say it works in ocean tech, and goes to the first segment whose words it carries. Each segment shows its best-funded first. Rebuilt nightly; updated 15 November 2026. ## More market maps [All maps](https://millionrounds.com/market-maps) [Market map **Ocean tech market map** 331 startups · 6 segments · $8.5B](https://millionrounds.com/market-maps/ocean-tech-market-map)[Market map · Europe **Ocean tech market map: Europe** 167 startups · 6 segments · $2.4B](https://millionrounds.com/market-maps/ocean-tech-europe-market-map)[New wave **New ocean tech startups, founded 2020 on** 105 startups · 6 segments · $3.9B](https://millionrounds.com/market-maps/new-ocean-tech-startups-market-map)[Investors map **Who invests in ocean tech** 95 investors · 5 segments](https://millionrounds.com/market-maps/ocean-tech-investors-map)[Market map · United States **Ocean tech market map: United States** 89 startups · 6 segments · $4.0B](https://millionrounds.com/market-maps/ocean-tech-united-states-market-map)[Raised in 2026 **Ocean tech startups that raised in 2026** 56 startups · 6 segments · $3.0B](https://millionrounds.com/market-maps/ocean-tech-raised-2026-market-map) ## Who backs ocean tech? 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