Penta-Ocean Construction Co.,Ltd.

Penta-Ocean Construction Co., Ltd. is a leading Japanese construction and civil engineering company specializing in marine, coastal, port, and offshore infrastructure projects. Founded in 1896 and headquartered in Tokyo, the company has extensive experience in dredging, land reclamation, bridge and tunnel construction, transportation infrastructure, and large-scale energy projects. Penta-Ocean is recognized for its expertise in challenging marine engineering works and has expanded its role in the renewable energy sector, particularly offshore wind development and installation. Through strategic partnerships, including its joint venture with DEME known as Japan Offshore Marine (JOM), the company supports the growth of Japan’s offshore wind industry by providing engineering, procurement, construction, and marine installation services. Penta-Ocean operates both domestically and internationally, delivering complex infrastructure projects that contribute to sustainable economic and environmental development.