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Walney Extension Project

Transition Pieces & Monopiles

Vessel

MV Svenja

Cargo

87 Transition Pieces (TPs),
87 Monopiles (MPs)

Weight

Up to 561 t (TPs)
Up to 1 019 t (MPs)

Dimensions

Up to 33 m long, Ø 7.44 m (TPs)
Up to 72.56 m long, Ø 8.4 m (MPs)

Total volume

239 366.46 m3 – 44 935.80 t (TPs)
310 660.70 m3 – 62 018.32 t (MPs)

POL

Rostock, Germany / Teesport, UK / 
Aalborg, DK

POD

Belfast, UK

Specials

  • Tallest and heaviest TPs currently in the market
  • Two different cargoes alternating in one voyage, vessel mobilized twice
  • Long-term employment with several consecutive voyages over about ten months

Tower Sections & Blades

Vessel

MV Annegret

Cargo

40 Tower Mid Sections (TMS),
40 Tower Top Sections (TTS),
24 Blades (B)

Weight

125 t (TMS)
119 t (TTS)
55 t (B)

Dimensions

30.7 × 7.5 × 7.2 m (TMS)
33.7 × 6.6 × 6.2 m (TTS)
82.5 × 6.7 × 6.0 m (B)

POL

Aabenraa & Esbjerg, Denmark (towers)
Nakskov, Denmark (blades)

POD

Belfast, UK

Specials

  • Consecutive shipment
  • Blade length of over 80 metres
  • Tight storage of blades


What began in 2010 with the delivery of foundations for the first Walney Offshore Wind Farm concession was successfully continued in 2017: MV Svenja played a fundamental role in the third extension of the Walney Offshore Wind Farm, located in the North West of the UK. The vessel transported a total of 87 Monopiles (MPs) from Rostock to Belfast. In addition, 87 Transition Pieces (TPs) were carried from Tees and Aalborg to the project harbor. With a height of up to 30 metres, a diameter of more than seven metres and a single weight of up to 561 tons, the TPs are amongst the largest ever built – a job that kept MV Svenja busy for almost a year.
This long-term project was characterized by several challenges: Two different types of cargo, each requiring its own mobilization setting on board, which had to be shipped alternately, a tight schedule from customer side demanding flawless workflows for a pinpointed delivery from three different loading ports, and a special sea-fastening system which had to be designed to cope with the cargo variety and to ensure quick handling, even during the harsh North Sea winter weather conditions. 

Gallery

Walney Extension Project: TPs, MPs

Gallery

Walney Extension Project:Tower Sections, Blades

Downloads

SAL Heavy Lift – Renewables Brochure

April 2018

pdf (8 MB)