Queen Alexandra I is a self-propelled hopper barge built in 2006 by Shan Tang Navigation Shipyard, China, and registered under the Indonesian flag in Jakarta. With a gross tonnage of 919 tons, it measures 52.90 meters in length and 12.50 meters in breadth, and features a 1,000 m³ hopper capacity. Powered by twin 288 kW engines, it operates at speeds of up to 10 knots (empty) and 8 knots (loaded). The vessel has supported key dredging projects at PLTU Waai Ambon, Tanjung Perak Port, Benoa Port, Bunati Port, and Semen Indonesia Tuban, making it a reliable asset for port maintenance and coastal development across Indonesia.