| OCEANE LIMITED | | Live |
| OCEAN.E DEVELOPMENTS COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong Oceaneering Limited | Private company limited by shares | Live |
| QINGDAO PACIFIC OCEANEERING (H.K.) LIMITED | Private company limited by shares | Live |
| YUE OCEANEERING EQUIPMENT SHARE LIMITED | Private company limited by shares | Dissolved |
| OCEANERA MARKETING (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| Oceanergy Industrial Co., Limited | | Live |
| OCEANET COMPANY LIMITED | Private company limited by shares | Dissolved |
| FISHMAW OCEANET COMPANY LIMITED | Private company limited by shares | Live |
| OCEANET SYSTEM LIMITED | Private company limited by shares | Live |
| OCEANET TECHNOLOGY LIMITED | Private company limited by shares | Live |
| OCEANETIC FOODS LIMITED | Private company limited by shares | Dissolved |
| Oceanevo Global Limited | | Live |
| OCEANEX LIMITED | Private company limited by shares | Dissolved |