Penta-Ocean Construction Co., Ltd. engages in the civil engineering and building construction activities in Japan, Southeast Asia, and internationally. The company operates through Domestic Civil Engineering, Domestic Building Construction, and Overseas segments. It provides its services in ports and harbors, airports, power stations, dams and river works, water supply and sewerages, bridges, roads and tunnels, railways, environmental, industrial and logistics, recreational, offices, commercial and lodging, residential, and educational, as well as medical, and health and welfare facilities. The company is also involved in the development of domestic real estate properties; and shipbuilding, leasing, insurance, and environment businesses. Penta-Ocean Construction Co., Ltd. was founded in 1896 and is headquartered in Tokyo, Japan.