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
ODU RT

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
FIA2026 animated banner
Fresh funding aimed at UK Armed Forces

Defence

Fresh funding aimed at UK Armed Forces' transformation

30 June 2026

Britain’s Armed Forces are set for transformation following an additional £15 billion investment to fund key equipment and technology, announced as integral to the Defence Investment Plan being published today.

Dstl marks 25 years

Defence

Dstl marks 25 years

29 June 2026

This week Defence Science and Technology Laboratory (Dstl) marks 25 years at the heart of the UK’s defence and national security, delivering science and technology advantage that helps keeps the country safe and secure.

Marshall Land Systems appoints Jason Beattie as Managing Director - Canada

Defence

Marshall Land Systems appoints Jason Beattie as Managing Director - Canada

29 June 2026

Marshall Land Systems today announced the appointment of Jason Beattie as Managing Director – Canada, effective 13th July 2026.

AtkinsRéalis to support delivery of UK infrastructure

Defence

AtkinsRéalis to support delivery of UK infrastructure

29 June 2026

AtkinsRéalis has been named as a supplier on a major UK government framework to support the design, delivery and optimisation of major infrastructure and building programmes across the built environment, defence and nuclear sectors over the next four years.

Advertisement
ODU RT
Serco named UK’s top employer for Veterans and Reservists

Defence Security

Serco named UK’s top employer for Veterans and Reservists

26 June 2026

Serco has been named the UK’s top employer for veterans, reservists and military families in the 2026 GREAT British Employers of Veterans rankings, highlighting the growing importance of former Armed Forces personnel to the defence support workforce.

Avon Technologies

Defence

Avon Technologies' Team Wendy receives US Army NG IHPS delivery orders

26 June 2026

Avon Technologies have confirmed that Team Wendy Ceradyne has received delivery orders totalling over $40 million from the US Army (ACC) and Defense Logistics Agency (DLA), under the Next Generation Integrated Head Protection System (NG IHPS) helmet contract.

Advertisement
ODU RT
Advertisement
FIA2026 animated banner