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
Security & Policing 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
ODU RT

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
British soldiers to gain SONUS five years early

Defence

British soldiers to gain SONUS five years early

18 February 2026

British soldiers will be able to more aggressively hunt, detect and locate hostile gunfire, as well as receive a further layer of protection on the battlefield, thanks to the early delivery of advanced technology in the shape of the SONUS system.

UK delivers modernised rehabilitation wards to Ukraine

Defence

UK delivers modernised rehabilitation wards to Ukraine

18 February 2026

The UK has handed over the last of five modernised medical rehabilitation wards to the Armed Forces of Ukraine, as part of Project Renovator.

Swindon expertise underpins acquisition of local defence specialist

Defence

Swindon expertise underpins acquisition of local defence specialist

18 February 2026

Swindon based corporate finance specialists Watersheds has announced that the acquisition of local business PRP Optoelectronics Ltd by SDI Group plc, has been successfully completed.

Robosys expands OEM propulsion control capabilities with Sleipner

Defence Security

Robosys expands OEM propulsion control capabilities with Sleipner

17 February 2026

Robosys Automation has announced the expansion of its multi-OEM propulsion control capabilities with the integration of Sleipner (Side-Power) Thruster Systems into its flagship VOYAGER AI autonomy and remote vessel control software suite.

Advertisement
PTC rectangle
UK pioneers 3D printing of aircraft parts using recycled titanium

Aerospace Defence

UK pioneers 3D printing of aircraft parts using recycled titanium

17 February 2026

QinetiQ, in partnership with Additive Manufacturing Solutions Limited (AMS Ltd.), has completed the maiden flight of an aircraft containing a 3D printed structural component, made from recycled titanium.

Amentum selected to advance UK hypersonic strike capabilities

Defence

Amentum selected to advance UK hypersonic strike capabilities

17 February 2026

Amentum has been selected to provide missile design engineering and program management expertise to advance the UK’s ambition for hypersonic strike capabilities.

Advertisement
PTC rectangle
Advertisement
Babcock LB Babcock LB