Through its subsidiary Shenzhen Huawei Offshore Transport Co Ltd founded in 1983, a company specialised in offshore oil field services, COES provides AHTS and PSV for oil field supporting, offshore oil lifting operation services, anchor handling services and offshore construction supporting services.
| Name | Type | Spec |
|---|---|---|
| HUA HU | OCEAN DP AHTS | 21,760 BHP |
| HUA PENG | OCEAN DP AHTS | 15,612 BHP |
| HUA FA | OCEAN DP AHTS | 12,800 BHP |
| HUA TENG | OCEAN AHTS | 9,792 BHP |
| HUA SHUN | OCEAN AHTS | 9,180 BHP |
| HUA JEN | OCEAN AHTS | 8,160 BHP |
| HUA YANG | OCEAN AHTS | 8,000 BHP |
| HUA QUAN | OCEAN AHTS | 7,520 BHP |
| HUA YUAN | OCEAN AHTS | 7,200 BHP |
| HUA TONG | OCEAN AHTS | 7,200 BHP |
| HUA WANG | OCEAN AHTS | 6,120 BHP |
| HUA YUE | OCEAN AHTS | 6,000 BHP |
| HUA CHENG | OCEAN AHTS | 5,440 BHP |
| HUA KANG | OCEAN AHTS | 5,220 BHP |
| HUA KUN | OCEAN AHTS | 5,220 BHP |
| HUA XIN | SUPPLY VESSEL | 4,200 BHP |
| DE PU | AHTS | 5,200 BHP |
| DE TAO | AHTS | 9,000 BHP |
| HUA TAI | OCEAN AHTS | 4,000 BHP |
| DE JING | DP II PSV | About 5,000 TON |
| HYSY 697 | AHTS | 12,060 BHP |