ROMSO Cyprus Knowledge Base

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Wind Osprey is a work ship for the construction of offshore structures such as wind turbines and plants for gas and oil production. It was designed by Knud E. Hansen A/S in Elsinore (Denmark) for Swire Blue Ocean. The ship was built at Samsung Heavy Industries shipyard in Geoje, South Korea, under construction number 2012 as Pacific Osprey.

In November 2020, Swire Blue Ocean was renamed Cadeler. In this context, the ship was renamed Wind Osprey.

Ship concept
Due to the hull shape of the ship, especially at the bow, a speed of 11.4 knots is achieved, which can vary depending on the height of the waves and wind direction. The propulsion takes place diesel-electrically by four propeller gondolas at the rear of the ship driven by electric motors with a power of 3.4 MW each. Furthermore, the ship has two bow thrusters each with 2.2 MW power and additionally two extendable propeller nacelles in the bow, which are also each driven with 2.2 MW power. The ship has a dynamic positioning system (DP2). Eight 9L27/38 MAN diesel engines, each powered by 2.8 MW, are available for power generation.

Use
In its multifunctional design, the erection and work ship also performs the functions that would otherwise be provided by a corresponding lifting and scrolling island as a self-propelled ship. The work ship shall be equipped with six steel truss carrying legs of 105 m each for the standing leg function, designed for standing on the seabed at 60 m depth; for special purposes, a conversion for a standing depth of 75 m can be carried out. The standing legs can be put into operation in a rack-and-pinion-jack function in a kind of “high-speed system”. The support legs in the normal length of 105 m allow the installation vessel to be lifted up to 17 m above the water level for the working function, at a depth of 60 m. In this mode of operation, possible waves are safely exceeded and the heaviest wind and storm conditions are overcome.

The purpose of the current deployment is to install offshore wind turbines as well as maintain and repair them.

Helicopter deck
Because of the six support legs arranged behind the bridge, a helicopter plateau with a diameter of 22 m and a load capacity of just under 13 tons is installed in front of and above the ship bridge.

Transportation function
With an area of over 4000 m2, the cargo deck offers enough space for tethered transport tasks and thus has the possibility, for example, to carry twelve wind turbine generators of the 3.6 MW class or to keep them available at sea.

Crane equipment
Several cranes from 10 tons are installed, of which the 1200 ton monopod crane is the largest; it can move installation goods up to a height of 120 meters with a maximum weight of 500 tonnes.

Cabins and offices