ScrubMarine Raises £740k for Autonomous Hull-Cleaning Robotics

UK maritime robotics startup ScrubMarine closed a £740k (~$1M) pre-seed funding round in December 2025 to develop autonomous hull-cleaning robots targeting the $100+ billion annual cost that biofouling imposes on global shipping through increased fuel consumption, reduced speed, and more frequent drydocking. The funding enables prototype completion and pilot deployments with fleet operators. Robotics technology approach: ScrubMarine's "Turtle" robot weighs under 50kg—far lighter than existing systems requiring cranes or support divers—and uses cavitation technology (microscopic water bubbles imploding on surfaces) to remove biofouling without damaging protective hull coatings. The robot captures inspection data simultaneously with cleaning, enabling operators to assess hull condition without separate survey operations. A larger "Whale" autonomous surface platform will deploy and recover multiple Turtle units without divers or port infrastructure, enabling cleaning operations offshore or at anchor. Biofouling impact scale: Marine growth can increase fuel consumption by up to 40%, creating substantial operating cost penalties and emissions increases that worsen as regulations tighten. Traditional hull cleaning requires either drydocking (expensive, schedule-disrupting) or diver operations (safety risks, weather limitations, regulatory complexity). Autonomous robots operating without human underwater exposure address both cost and safety limitations while enabling more frequent cleaning maintaining optimal hull efficiency. Strategic backing and pathway: Investors include Graham Westgarth (former UK Chamber of Shipping president) and Colin Greene (former Apple country CEO) alongside Northern Powerhouse Investment Fund and SFC Capital. Letters of support from Caledonian MacBrayne and Wallenius Wilhelmsen indicate operator interest, with UK ferry operator pilot planned for 2026. Founded by 21-year-old Heriot-Watt robotics graduate Rohith Devanathan, ScrubMarine exemplifies how robotics expertise from other sectors is targeting maritime operational challenges. [EU-Startups]

This story is part of the Maritime AI Digest of 4 January 2026.

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