1

1

Installation

2

Outline

• Parts to install

• Equipment and methods per item

• Example for Horns Rev

Tomorrow:

A2Sea and Ballast Nedam

2

3

Parts to install

4

Parts to install

3

5

Parts to install

6

Parts to install

4

7

OWT installation

•Foundation pile

•(Transition piece)

•Tower

•Nacelle

•Blades

8

OWT installation

Foundation pile:

•Driving

•Drilling

•Suction

5

9

Scour Protection Installation Driving Pile

OWT installation

10

OWT installation

6

11

12

7

13

Suction Bucket for 3MW turbine in Frederikshavn, Denmark

14

OWT installation

Transition Piece:

• To connect all external details: boat landing, J-tubes, platform

• To correct driving misalignment

• To offer a flange

8

15

OWT installation

16

OWT installation

At Arklow Banks: misalignment < 0.1o

Arklow Wind Farm, Ireland7 x GE 3.6 Offshore

9

17

OWT installation

18

Slip-Joint

OWT installation

10

19

OWT installation

20

Turbine installation

11

21

Turbine installation

“Bunny Ear Method”

22

Cable installation

•In-field cables

•Shore connection

•Connection to turbine

•Landfall

12

23

Cable installation

24

Cable installation

13

25

Cable installation

26

Cable installation

Trenching against:

•Fishing gear

•Anchors

•….

Or rock-dump

14

27

Cable installation

28

Shore Connection

15

29

Shore Connection

30

Shore Connection

Directional Drilling

16

31

Transformation Platform

32

Transformation Platform

17

33

# of vessels

•Foundation pile•Transition piece•Tower + turbine•Rock dumping•Cable laying•Trenching•Diver support

•Heavy lifting•Shore connection•Tugs•Personnel transp.

11 topics

> 20 vessels

34

Players

A2Sea

18

35

Players

Mammoet van Oord

36

Players

Seacore

19

37

Players

Mayflower Energy