- In Accordance With API 4F
- Type: sling-shot, swing-up, box-on-box, swing-lift, etc.
- Raising type: by drawworks, hydraulic winches or hydraulic cylinders
- Clear height under rotary beam meets BOP installation requirements.
| Substructure | DZ225 | DZ315 | DZ450 | DZ585 | DZ675 |
| Max. static load (kN) | 2250 | 3150 | 4500 | 5850 | 6750 |
| Floor height | 25’ | 30’ | 35’ | 35’ | 40’ |
| Clear height under rotary beam | 15’ | 20’ | 25’ | 30’ | 33’ |
| Setback rating (kN) | 1200 | 1600 | 2200 | 2880 | 3240 |
