| Ship's Name | Ship Type | Owner Company | Date of Built |
| Hakuryu-5 | Drilling Rig, Semi Submersible | Japan Drilling Co Ltd | 1977 - 08 |
| Ocean Apex | Drilling Rig, Semi Submersible | Diamond Offshore LLC | 1976 - 08 |
| Viking Prospector | Drilling Rig, Semi Submersible | Unknown | 1971 - 01 |