Osaka's Eight Knot Co., Ltd. has closed the first slice of a ¥450 million (about $2.9 million) Series A led jointly by ITOCHU Technology Ventures' Fund No. 6 and Nissei Capital Fund No. 15, with QB Capital and Ikeda Senshu Capital joining the round. The University-of-Tokyo spin-out is one of a handful of well-funded Japanese startups betting that autonomous navigation, not zero-emissions hulls, will define the next decade of coastal shipping.
The AI CAPTAIN Stack
Eight Knot's flagship AI CAPTAIN is a retrofit autonomy module that layers self-position estimation, real-time route generation and radar/vision-based obstacle recognition over existing bridge equipment. Rather than build a new hull, the startup sells software and edge-compute boxes that slot into workboats, harbour tugs and small coastal freighters – a model that lowers Japanese shipowners' regulatory bar because the vessels themselves remain "crewed" under IMO rules.
Why ITOCHU Leans Maritime
ITOCHU is Japan's largest general trading house, with existing exposure to LNG, offshore wind and shipping. Its lead ticket into Eight Knot slots alongside earlier maritime autonomy bets we tracked in Kraken Technology Group's Series B and the subsea acquisition thesis explored in the Kraken Robotics Covelya deal. Nissei Capital brings insurance-industry relationships that could accelerate approvals for AI CAPTAIN-equipped vessels.
Market Context
Japan's coastal shipping fleet faces one of the world's fastest-ageing captain cohorts, with the government's Maritime Bureau projecting a 40% shortage of licensed operators by 2035. Eight Knot's retrofit approach echoes the "brownfield first" playbook that has fuelled U.S. haul-truck automation captured in our SoftBank/ASI joint venture story. It also complements ferry and workboat autonomy pilots profiled in our earlier Starfish Space report for the maritime-adjacent space domain.
What's Next
Eight Knot plans to use the Series A first close to expand its Osaka R&D team, secure Class NK type approval for AI CAPTAIN, and complete additional retrofit trials with Japanese and South-East Asian shipyards. A final Series A close is expected before March 2027.
Reporting based on coverage from The SaaS News, Japan Startup Observer and Automate.org.