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
Solar array to be installed at Bassingbourn Barracks

Defence Events

Solar array to be installed at Bassingbourn Barracks

1 April 2026

The Defence Infrastructure Organisation (DIO), working with Custom Solar on behalf of the British Army, held a ground-breaking ceremony for a new solar array at Bassingbourn Barracks.

QinetiQ to establish Belgian Mission Data Factory

Defence

QinetiQ to establish Belgian Mission Data Factory

1 April 2026

QinetiQ is to support the Government of Belgium in strengthening its ability to collect, manage and exploit mission data, the information and intelligence critical to modern defence operations.

HMS Active completes float off feat

Defence Events

HMS Active completes float off feat

30 March 2026

Building on the momentum of February's dual milestone event at Babcock’s Rosyth site, the Type 31 frigate programme has reached another significant stage, with HMS Active completing the float-off process.

Lockheed Martin joins MTC as Tier 1 member

Defence

Lockheed Martin joins MTC as Tier 1 member

30 March 2026

Lockheed Martin has joined the Manufacturing Technology Centre (MTC) as a Tier 1 member which will see it collaborate on core research, capabilities and investments and play a key role in managing projects that address some of the pressing challenges being faced by defence industry supply chains.

Advertisement
ODU RT
RFA Lyme Bay gets mine hunting tech upgrade

Defence

RFA Lyme Bay gets mine hunting tech upgrade

30 March 2026

The Royal Navy is stepping up its mine hunting capabilities with new cutting-edge uncrewed equipment being added to RFA Lyme Bay in the coming days.

British Army retire Land Rover fleet

Defence

British Army retire Land Rover fleet

30 March 2026

British soldiers will use a new fleet of thousands of modern vehicles, following the start of the retirement of the iconic Land Rover fleet earlier this month, after 70 years of service.

Advertisement
ODU RT
Advertisement
Gulfstream banner