Advancing UK Aerospace, Defence, Security & Space Solutions Worldwide
  • Home
  • /
  • Defence
  • /
  • ACUA Ocean secures £5.5m to deliver world’s most advanced open ocean USV

Defence Security

ACUA Ocean secures £5.5m to deliver world’s most advanced open ocean USV

Plymouth-based autonomous unmanned surface vessel (USV) developer ACUA Ocean has closed its £1.5 million Pre-Seed investment round co-led by StealthPoint and Britbots, alongside securing £4 million in new and existing research and development grants from the UK’s Department for Environment, Food & Rural Affairs (DEFRA) and Department for Transport.

Above: (left to right) ACUA Ocean Co-Founders, Mike and Neil Tinmouth.
Courtesy ACUA Ocean

The pre-seed round, led by StealthPoint, a US defence and intelligence investor deploying capital into hardware and software innovators, focusing on strengthening national security for the US and its allies.
 
The round also saw investment from the UK early-stage investor in robotics and automation, BritBots and sees ACUA Ocean join an exclusive portfolio of pioneering firms such as QLM Tec and Humanising Autonomy. Sixth Wave Ventures and Blue Action Accelerator also participated in the round.
 
The venture investment commitments add to the £4 million grant funding secured by ACUA Ocean from UK government bodies, which included a successful application to the Department for Transport’s Clean Maritime Demonstration Competition and Smart Shipping Acceleration Fund and a successfully completed grant from DEFRA relating to the Improving Marine Observation and Biodiversity programme, a government-led scheme focused on building comprehensive solutions for data collecting, processing and analysing remotely in real-time.

Advertisement
PTC rectangle

ACUA Ocean is currently developing its open ocean platform Pioneer-class USV, which can operate in very high sea states relative to its size, enabling systems and sensor payloads to be deployed in wave heights exceeding four metres (13ft). The prototype USV is hydrogen-powered, although there are plans for optional fuel powertrains in subsequent platforms. Pioneer will act as a platform or “mothership” providing the modular payload capacity, power and communications necessary for the launch and recovery of technologies, including remotely operated vehicles (ROVs),  Autonomous underwater vehicles (AUVs) and unmanned aerial vehicles (UAVs).

ACUA Ocean’s approach to ‘interchangeable nested robotics’ will replace the need for larger, more costly crewed vessels to do dull, dirty and dangerous tasks, such as subsurface surveys, monitoring and protection of critical offshore infrastructure.

Advertisement
Security & Policing Rectangle

Commenting on the latest investment, ACUA OCEAN Co-Founder Neil Tinmouth said: “We’re excited to be collaborating with a visionary group of venture investors who share our passion for dual-use ocean technology.

"The combination of the rapid growth in offshore renewables, regional geopolitical uncertainty and threats to our marine biodiversity mean customers are increasingly seeking out vessels that can provide enhanced open ocean capabilities like the Pioneer.”

Advertisement
Babcock LB Babcock LB
Navantia UK targets  500 apprentices by 2030

Defence Security

Navantia UK targets  500 apprentices by 2030

5 February 2026

Navantia UK has set a target of hiring 500 apprentices by 2030 to support the business’s expansion in shipbuilding, engineering and in supplying the offshore energy industry. 

ECS to showcase BLACKTALON at WDS 2026

Defence Events

ECS to showcase BLACKTALON at WDS 2026

5 February 2026

Radio Frequency (RF) specialist, Enterprise Control Systems (ECS), will showcase its BLACKTALON Ecosystem at the World Defense Show (WDS), being held in the Riyadh Exhibition & Convention Centre, 8th-12th February 2026.

Investment in student skills to boost UK defence industry

Defence

Investment in student skills to boost UK defence industry

5 February 2026

Britain’s defence industry will benefit from an £80 million skills boost to increase places on key strategically-relevant courses.

Returning to STEM after career break becomes harder than ever

Aerospace Defence Security Space

Returning to STEM after career break becomes harder than ever

4 February 2026

Returning to STEM industries after a career break is now harder than ever, according to new research by STEM Returners, with bias against gender, age, ethnicity and a lack of recent experience penalising highly qualified people from getting a job.

Advertisement
ODU RT
HENSOLDT receives KNDS orders for digital armoured vehicle optronics

Defence

HENSOLDT receives KNDS orders for digital armoured vehicle optronics

4 February 2026

HENSOLDT has received several major orders from KNDS to equip combat and armoured personnel carriers with digital optronics.

IFS chosen by SkyAlyne to support RCAF’s FAcT

Defence

IFS chosen by SkyAlyne to support RCAF’s FAcT

4 February 2026

IFS today announced that it has been selected by SkyAlyne the prime contractor for the Future Aircrew Training (FAcT) programme for the Royal Canadian Air Force (RCAF), to provide a fully digital aviation maintenance and asset management platform in support of the Canadian Department of National Defence’s new training initiative.

Advertisement
PTC rectangle
Advertisement
General Atomics LB