- Steel support frame connected to the superstructure deck and supporting the helideck aluminium structures
- Type of helicopter: BV 234 “CHINOOK, maximum Take off weight 21300 kg – (21.3 t)
- Helideck size: D = 27.2m
- Helideck shape: Octagonal
- Detailed design of steel and aluminium structures.
- Detail design of the drainage system and fire water system.