Waterbending-powered submarine (Earth-1529)

The waterbending-powered submarines are naval vehicles designed by Tenten and built by the Mechanist. The vessels were used during the invasion of Republic City to transport Konohagakure shinobi into the city's harbors, as well as during the Fourth Great Shinobi War to support United Forces troops in the Land of Water and the Land of Lightning duo their coastlines being littered with small skirmishes.