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
QinetiQ supports HMS Anson deployment

Defence

QinetiQ supports HMS Anson deployment

2 June 2026

QinetiQ supported HMS Anson’s recent, routine Submarine Maintenance Period (SMP) in Australia, using additive manufacturing to deliver replacement parts in just four weeks - much quicker than the months or years it usually takes.

Omnisense and 42T partner on resilient drone landing system

Aerospace Defence Security

Omnisense and 42T partner on resilient drone landing system

1 June 2026

Omnisense, which specialises in terrestrial positioning technology, has partnered with 42 Technology (42T) to demonstrate a safer autonomous drone landing system when satellite navigation signals are unreliable.

Thales awarded MoD contract for LMMs

Defence

Thales awarded MoD contract for LMMs

1 June 2026

The UK Ministry of Defence (MoD) has signed new contracts with Thales in the UK to supply hundreds more Lightweight Multirole Missiles (LMMs) to the British Armed Forces, reinforcing UK stockpiles and protection of British personnel in the Middle East and beyond.

JET Connectivity joins NATO DIANA Mission Track programme

Defence

JET Connectivity joins NATO DIANA Mission Track programme

1 June 2026

The Minister for Defence Readiness and Industry, Luke Pollard MP, has congratulated JET Connectivity for being one of just five companies globally and the only UK based firm to have been awarded a place on the elite NATO DIANA Mission Track programme.

Advertisement
ODU RT
BAE Systems and PGZ win British-Polish Collaboration Award

Defence

BAE Systems and PGZ win British-Polish Collaboration Award

29 May 2026

The British Embassy in Warsaw and the British Polish Chamber of Commerce (BPCC) has jointly awarded Polish Armaments Group (PGZ) and BAE Systems the 'British-Polish Collaboration Award', for exemplifying a high impact UK–Poland industrial partnership, delivering tangible outcomes for Polish national and European security.

Babcock and Truflo Marine pilot to support AUKUS

Defence

Babcock and Truflo Marine pilot to support AUKUS

29 May 2026

Babcock is to lead a UK pilot initiative with Truflo Marine to demonstrate how allied submarine sustainment supply chains can be mobilised more quickly across the UK and Australia to strengthen capacity, support operational availability and build long-term industrial resilience in support of AUKUS and Submarine Rotational Force – West.

Advertisement
ODU RT
Advertisement
FIA2026 animated banner