A dynamically-positioned, 48,000 DWT heavy lift transport and installation vessel for the offshore wind industry. The design combines the benefits of a semi-submersible transport vessel with a large, 3,000 mt lifting capacity main crane. Can perform heavy lift crane operations with the main deck submerged.

Vessel type

Heavy lift

Built by

China Merchants Heavy Industry (CMHI), China



Owned by

Offshore Heavy Transport

Designed by

Ulstein Design & Solutions B.V.

Principal dimensions

216.3 m
56 m
Draught (max):
submerged max 27.6 m
Speed (max):
13 kn
100 POB

Note: Subject to selected variant configuration


Propulsion thrusters:
3 x 5,500 kW
Retractable thruster:
1 x 3,000 kW
Tunnel thrusters (fwd):
3 x 3,000 kW
Liebherr main crane:
3,000 mt
Deck strength:
30 t/m²
Positioning system :
DP 2
Class :

The first vessel (with options for up to another 3 units) is constructed by China Merchant Heavy Industry (CMHI) for delivery 2021/2022. The vessel’s capabilities match the future requirements of the offshore wind industry, allowing her to transport and install up to 10 x 1,500t ultra-large jacket foundations or 11 x 2,000t XXL monopiles plus transition pieces for the largest anticipated Wind Turbine Generators.

Ship history

July 2020: Contract announcement for the transport and installation of foundations at Dogger Bank A.

September 2020: Contract announcement for the second phase, Dogger Bank B.

Alfa Lift will transport and install all monopile foundations and transition pieces for each of the two 1.2GW phases of the project between 2022 and 2024. The Dogger Bank Wind Farm is being developed by SSE Renewables and Equinor, with first power expected in 2023.

Please contact us for more information

Ulstein Design & Solutions B.V.

Cornerstone Building (6th floor)
Rotterdam Airportplein 32
3045 AP Rotterdam
The Netherlands

Tel: +31 10 475 00 11