ACUA Ocean
"Revolutionising maritime operations, monitoring and data collection"
UK (Plymouth) builder of the Pioneer-class uncrewed surface vessel, the first USV to gain MCA Workboat Code 3 approval for UK coastal operations.
ACUA Ocean Limited is a maritime technology company headquartered at Turnchapel Wharf in Plymouth, England, incorporated in November 2020 by founders Neil Tinmouth (CEO) and Mike Tinmouth (COO). The company designs and builds uncrewed surface vessels (USVs) for defense, maritime security, and ocean-data collection, positioning its vessels as dual-use platforms serving both military and commercial or scientific customers.
Its flagship product is the Pioneer-class USV, a modular vessel designed for extended endurance and payload flexibility. In 2025, Pioneer became the first uncrewed vessel to receive UK Maritime and Coastguard Agency Workboat Code 3 approval, following an earlier Lloyd's Register Approval in Principle granted in 2022 -- regulatory milestones that let the vessel operate in UK coastal waters under a recognized safety framework rather than only as an experimental craft. ACUA Ocean has used the platform for applications including maritime intelligence, surveillance and reconnaissance (ISR), submarine-detection support, communications relay, environmental and infrastructure monitoring, and hydrographic survey work.
The company has been active in UK defense-adjacent trials through 2026: it took part in a 1.2 million GBP "Smart Sound Connect" demonstration of multi-vessel marine robot autonomy off Plymouth, contributed its autonomous surface vessel platform to a maritime counter-drone partnership, and trialed a robotic boat with the Royal Navy for autonomous launch and recovery of drones at sea. Earlier funding and validation included a 2021 award from the UK Department for Transport and backing from Katapult Ocean, plus a win in the ProDrive Rapid Challenge.
ACUA Ocean belongs to industry bodies including the Maritime Industries Association, UK Chamber of Shipping, Workboat Association, Global Underwater Hub, Make UK Defence, and ADS Group, reflecting its position within the UK's defense and maritime-autonomy supply chain. Coverage of the company has appeared in The Economist, the BBC, the Telegraph, UK Defence Journal, and Navy Lookout. Based on the team listing on its own site, staffing has grown to roughly 40 people. Its differentiation from other USV builders is a specific focus on regulatory-compliant, class-approved surface vessels intended to operate alongside crewed and uncrewed assets in UK coastal and near-shore defense scenarios, rather than purely experimental research platforms.
Primary type & automation activities this supplier delivers:
Pioneer-Class USV
Pioneer-Class USV is a SWATH unmanned surface vessel carrying up to 7 tonnes of modular payload for maritime ISR, survey and defense missions.
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Contact ACUA Ocean
WEBSITE
https://www.ocean.tech/HEADQUARTERS
United Kingdom
Company Facts
Founded
2020
Primary Role
Manufacturer
Company Size
employees 10-50
Primary Region
Europe
Annual Sales
-
Funding Stage
-
Funding Total
-
Certifications & Memberships
