An aerial drone photo taken on Aug. 13, 2025 shows a fully electric-powered harbor tugboat sailing on the waters in north China's Tianjin Municipality. A "green fleet" consisting of four fully electric-powered harbor tugboats set sail from a port in Tianjin on Wednesday. These four tugboats form the largest fleet of their kind in northern China, which will primarily assist various vessels with port entry, exit, docking, and undocking within Tianjin Port waters. Unlike conventional tugboats, the electric ones operate with zero exhaust emissions and low noise. Each of them boasts 5,400-horsepower, advanced electric motors as well as intelligent control systems, which enable higher operational efficiency at much reduced costs. [Photo/Xinhua]
A drone photo taken on Aug. 13, 2025 shows fully electric-powered harbor tugboats sailing on the waters in north China's Tianjin Municipality. [Photo/Xinhua]
Crew members fix cable aboard a fully electric-powered harbor tugboat in north China's Tianjin Municipality, Aug. 13, 2025. [Photo/Xinhua]
A drone photo taken on Aug. 13, 2025 shows fully electric-powered harbor tugboats docked in north China's Tianjin Municipality. [Photo/Xinhua]
An aerial drone photo taken on Aug. 13, 2025 shows fully electric-powered harbor tugboats sailing on the waters in north China's Tianjin Municipality. [Photo/Xinhua]
A drone photo taken on Aug. 13, 2025 shows a fully electric-powered harbor tugboat sailing on the waters in north China's Tianjin Municipality. [Photo/Xinhua]
