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
Cranfield University
Wayland Additive to showcase NeuBeam tech at Formnext

Aerospace Defence Events

Wayland Additive to showcase NeuBeam tech at Formnext

4 November 2025

Wayland Additive, a specialist in eBeam metal Additive Manufacturing (AM) technologies, is returning to Formnext (taking place 18th–21st November 2025 in Frankfurt, Germany) where it will be showcasing its NeuBeam technology.

Marshall to give Fat Albert a new centre wing box

Defence

Marshall to give Fat Albert a new centre wing box

4 November 2025

Fat Albert, the world’s most recognisable C-130 Hercules, will soon return to Marshall Aerospace’s hangars for crucial structural work that will add decades to its lifespan.

ASC and BAE Systems launch joint ICN Portal for NPS

Defence

ASC and BAE Systems launch joint ICN Portal for NPS

4 November 2025

Australia’s sovereign submarine partners ASC and BAE Systems today announced a new-look Industry Capability Network (ICN) Portal for Australian businesses seeking to participate in the Nuclear-powered Submarine Programme (NPS).

MoD launches Defence Housing Strategy

Defence

MoD launches Defence Housing Strategy

4 November 2025

The Ministry of Defence (MoD) has launched its new Defence Housing Strategy, with £9 billion set to improve over 40,000 military homes.

Advertisement
ODU RT
BAE Systems and PMB to advance Australian battery tech for SSN-AUKUS

Defence

BAE Systems and PMB to advance Australian battery tech for SSN-AUKUS

4 November 2025

Australian submarine battery systems company PMB Defence Engineering has entered into a contract with BAE Systems in the UK to enable the potential integration of its nickel zinc battery technology into the design of UK and Australia's nuclear-powered submarines, known as SSN-AUKUS.

Sigma Advanced Systems acquires Nasmyth

Aerospace Defence Security

Sigma Advanced Systems acquires Nasmyth

3 November 2025

Nasmyth Group, a provider of specialist precision engineering services to the aerospace, defence and related industries, today announced its acquisition by Sigma Advanced Systems UK Ltd.

Advertisement
Security & Policing Rectangle