SINGAPORE HEADQUARTER
- OceanSTAR Marine & Offshore Investment Pte. Ltd.
- OceanSTAR Marine & Offshore Pte. Ltd.
- Elite Marine & Offshore Services Pte. Ltd.
- Add: 2 Venture Drive, #16-15/#16-19/#16-30/#16-31 Vision Exchange, Singapore 608526
INDONESIA COMPANY
- PT OceanSTAR Corp Indonesia
- Add: Indonesia Stock Exchange Building, Tower 2, Level 28 – Suite 2805 Jl. Jenderal Sudirman, Kav. 52-53, SCBD, Jakarta Selatan 12190 Indonesia
MALAYSIA COMPANY
- OceanSTAR Engineering Holdings Sdn. Bhd.
- Add: Level 20, Plaza OSK, Jalan Ampang, 50450 Kuala Lumpur, Malaysia
CHINA COMPANIES
- OceanSTAR Elite Marine & Offshore (Jiangsu) Co., Ltd.
- 瀚辰精英海洋工程（江苏）有限公司
- Add: Building 13A 1001, Zilang Science and Technology City, No.60 Chongzhou Avenue, Development Zone, Nantong, Jiangsu
- Add: 江苏省南通市开发区小海街道崇州大道60号紫琅科技城13A-1001
- OceanSTAR Energy Co., Ltd. / OceanSTAR (Tianjin) Marine & Offshore Co., Ltd.
- 瀚辰能源有限公司 / 瀚辰海洋科技（天津）有限公司
- Add: B1-301/303/401, Vision Building, No.20, Xinhuan West Road, TEDA, Tianjin
- Add: 天津市滨海新区经技术开发区信环西路20号愿景大厦B1-301/B1-303/B1-401
- OceanSTAR (Qingdao) Marine & Offshore Co., Ltd.
- 瀚辰船舶与海洋工程（青岛）有限公司
- Add: 1707, Jianguo Building, Changjiang Middle Road, Huangdao District, Qingdao, Shandong
- Add: 山东省青岛市黄岛区长江中路519号建国大厦1707
- OceanSTAR (Wuhan) Marine & Offshore Engineering Design and Research Co., Ltd.
- 瀚辰船舶海洋工程设计研究（武汉）有限公司
- Add: 805, Block F, Modern Guanggu World Trade Center, No. 70 Guanggu Avenue, Wuhan, Hubei
- Add: 湖北省武汉市光谷大道70号现代光谷世贸中心F座805
- OceanSTAR Elite Marine & Offshore (Jiangsu) Co., Ltd. Shenzhen Branch
- 瀚辰精英海洋工程（江苏）有限公司深圳分部
- Add: 广东省深圳市宝安区创业二路华联城市全景花园1栋G座14层1421
- Add: 1421, G of Building 1, Hualian City View Garden, Chuangye 2nd Road, Baoan District, Shenzhen, Guangdong