Fjord moorings for Hywind Tampen floating wind turbines

Enabling efficient logistics with local shorebase 

All four wind turbines were connected to the prelay mooring spreads in September 2022 and were secured to the moorings until the units were towed to Tampen Field and installed offshore with the other seven units. 

Logistics was a key component for success. The equipment provided was from our base at Sløvåg which is where the units were assembled and commissioned. For over three decades, Intermoor in Norway has been delivering mooring equipment to projects inshore and offshore along the Norwegian coastline. Through our shore-based facility at Wergeland base in Sløvåg, we have access to eight deepwater quays, priority berthing and dedicated heavy lift and chain handling equipment. 

The availability of the equipment on site as well as our local personnel experienced in load-out services allowed us to ease logistics, minimise mobilisation time and ensure reliability. 

This enabled Equinor to utilise vessels performing other operations to assist with this installation during spare time slots. 

Mooring analysis was performed to ensure the robustness of the mooring spreads would secure the four wind turbines during the harsh winter storms along the Norwegian coast. All DNV-inspected equipment for the project was delivered from our stock of mooring equipment. 

Innovations in action 

All mooring equipment provided was tagged using radio-frequency identification (RFID) technology, which ensured the quality of the identification of equipment and enhanced mobilisation and demobilisation processes at the quayside, in the yard and offshore for easy identification using RIFD readers and iPads. 

The total package of mooring equipment required: 

• Eight 15-Ton anchors
• 10,000 meters of 76mm dia. R4 chain
• All connections including shackles, kenters and swivels.