| Code | Description |
| UN | Oil Production Manifold / PLEM |
| UP | Water Injection Manifold / PLEM |
| UQ | Gas Injection Manifold / PLEM |
| UR | WAG Injection Manifold / PLEM |
| DW | Well-head and Christmas tree manifold |
| UY | Subsea Pump Module |
| ESP | Electrical Submersible Pump |
| UU | Multiphase Pump |