Eleven maritime startups and scale-ups will join PortXL's 2026 acceleration program in Rotterdam, after the accelerator vetted a global pool of more than 250 applicants.

The Rotterdam-based accelerator, founded in 2015, has put 141 startups through its program over the past decade. Its alumni have raised more than €202 million in funding and show a 76% survival rate — a metric few maritime venture programs can match. The 2026 cohort spans three tracks: Maritime & Offshore, Energy & Infrastructure, and Dual Use.

"PortXL's second decade starts with a cohort that reflects where the sector is heading," said Koen Vogel, Director of PortXL. "Resilience, security and the energy transition are converging in the port and maritime sector, and these startups & scale-ups work right where they meet. Our shared goal over the coming weeks is to turn introductions into tangible value for both our partners and the founders."

What does the program deliver?

The cohort runs from 6 October to 3 December, with three intensive weeks in Rotterdam built around three pillars:

• access to market
• access to capital
• a network of peers and mentors

Lead program partner is the Port of Rotterdam Authority, with innovation partners including the Ministry of Defence and the Municipality of Rotterdam. For 2026, PortXL adds two new innovation partners: shipbuilder Damen and dredging and offshore equipment maker Royal IHC.

Who made the cut?

Maritime & Offshore

• Bluefins (France) — retrofittable auxiliary propulsion shaped like a whale's tail, cutting fuel consumption by up to 20% on ocean-going vessels, with a targeted ROI of three to five years.
• BioHalo (Denmark) — non-PFAS, biodegradable surface-modifying ingredients for coatings, including a biotech antifouling paint component that previously could not be synthesized chemically and needs less energy to produce.
• Elnav (Croatia) — human-in-the-loop maritime AI for watchkeeping support, critical-procedure support and emergency leadership training.
• Marine Weather Intelligence (France) — weather routing and forecasting for shipping, offshore, heavy transport and towage, aimed at cutting fuel use, emissions and operational risk.
• Shipsonic (Netherlands) — ultrasonic antifouling that keeps hulls free of fouling through vibration, without chemicals or maintenance; already in use by Dutch shipowners.

Energy & Infrastructure

• CLHYNN (France) — fuel cell with an integrated hydrogen source, built without rare metals, critical raw materials or PFAS, positioned as decentralized energy.
• Meterspersecond (Netherlands) — vertical wind turbines with double the energy density of conventional designs, aimed at replacing diesel generators for dockside power.
• PointCanvas (UK) — turns 3D site scans of complex infrastructure into usable spatial insights within hours instead of weeks; already piloted in the Scottish oil and gas sector.

Dual Use

• Aetherion Defence (Luxembourg) — EU-sovereign distributed radar mesh detecting low-altitude drones around ports, critical infrastructure and defence sites, with distributed sensors reducing single-point failure risk.
• Cleardrop (France) — keeps optical sensors clear of rain, snow, salt, sand and mud using acoustic waves and minimal power, keeping autonomous systems operational in blinding conditions.
• Copsys (Canada) — digital, self-sensing hull and infrastructure coating supporting antifouling, corrosion detection and proactive maintenance, reducing manual visual inspection.

Why it matters for the sector

For carriers and shipowners, the cohort clusters around two hard cost lines: fuel and hull maintenance. Bluefins claims up to 20% fuel savings, while BioHalo, Shipsonic and Copsys all attack fouling — a drag on fuel bills that conventionally requires chemicals or drydocking. With EU environmental rules tightening around PFAS and emissions, non-PFAS coatings and chemical-free antifouling give operators a compliance hedge, not just a cost play.

The Dual Use track signals where port security budgets are moving. Aetherion's drone-detection mesh and Cleardrop's sensor-cleaning technology target the intersection of port operations and defence — a priority reinforced by the Ministry of Defence's role as an innovation partner.

For forwarders and port operators, PointCanvas's fast 3D spatial insights and Meterspersecond's dockside wind power speak to digitization and electrification pressures at the terminal gate.

The three-month program now has to convert introductions into contracts. If the 2026 cohort follows the trajectory of its predecessors, Rotterdam's innovation pipeline — and the €200 million-plus in alumni funding behind it — will keep growing as the energy transition and port security reshape procurement priorities.