Autonomous vehicle technology is being adapted for use in everything from container ships to tankers. Engineers are also equipping other types of commercial vessels, including ferries, tugboats and warships, with state-of-the-art navigation systems that can be safely used in harbors and on lakes, rivers and oceans.

OSAKA, Japan—Kawasaki Heavy Industries Ltd., Yanmar Power Technology Co. Ltd., and the Japan Engine Corp. have formed a consortium to pursue joint development of hydrogen fueled marine engines for ocean-going and coastal vessels.