- Steel support frame connected to the superstructure deck and supporting the helideck aluminium structures
- Type of helicopter: SIKORSKY S-92 or S61N, maximum Take-off weight 12834 kg – (12.8t)
- Helideck size : D = 27.75m
- Helideck shape: Octagonal
- Detailed design of steel structure.
- Detail design of the drainage system and fire water system.