Kawasaki Heavy Industries has unveiled a four-legged prototype robot that climbs steel ship hulls to weld and support painting work. The compact machine grips vertical and curved surfaces with electromagnets in its feet. Marine Insight reported in its hull-robot report that Kawasaki showed the prototype on October 6, 2026 at its Group Vision 2030 strategy update. The goal is direct work on the hull exterior, where people now face high, hot and hard-to-reach steel.
Table of Contents
- How it sticks to a hull
- What the autonomy actually does
- Why shipyards want legs now
- What happens next at Sakaide
How it sticks to a hull
The prototype measures 60 by 44 by 29 cm, about the size of a small suitcase. Ubergizmo, citing NHK World, described in its climbing-robot overview how each foot holds the steel with an electromagnet.
That magnetic footing lets it step across vertical plates and curved sections. It can stay attached where wheels would slip and where scaffolding is slow to set up.
What the autonomy actually does
Cameras and sensors watch the hull, seams and foot placement during movement. Onboard software described as physical AI uses that view to move without remote driving.
Marine Insight noted in its hull-robot report that the system inspects weld seams, plans its work sequence and judges how much welding is needed. That means less rework from missed spots and more consistent seams across a large block.
Why shipyards want legs now
Japan's shipbuilding workforce is shrinking and aging, especially among skilled welders. Hull-block exteriors also demand work at height, near heat and in awkward positions. Legged climbing changes the access method: Baird Maritime reported in its shipbuilding-program briefing that Kawasaki, Shin Kurushima Dockyard and Namura Shipbuilding were selected under a Japanese next-generation shipbuilding program for mobile AI robots covering open-space welding, painting and quality checks on hull-block exteriors.
- work directly from the hull surface instead of a high-reach vehicle
- reach curved areas without rebuilding scaffolds
- keep people away from the most exposed welding positions
- repeat inspection and welding steps with the same sensor record
What happens next at Sakaide
Demonstration testing is planned at Sakaide Works in Kagawa in 2027, with practical use targeted around 2028. Full operation is framed as FY2028, so the machine is not yet working on commercial hulls.
The robot also fits a wider digital-shipyard effort. Kawasaki announced collaboration with NVIDIA on July 16, 2026 to build that next-generation yard at Sakaide for welding, painting, inspection and material handling with digital twins. NVIDIA supplies Omniverse, Isaac, Cosmos, Metropolis and Jetson for virtual training, while Kawasaki supplies shipbuilding data, production knowledge and robotics manufacturing experience.
