Three steps to build a wind farm: The sea jack

Science correspondent David Shukman inspects the sea jack, the immense beast of burden, without which the wind farm could not be built. Click on the pictures below to see his reports.

What is a sea jack?

Science correspondent David Shukman heads out to the Irish Sea to take a look at a sea jack, the floating construction vessel that is used to install wind farms.

Science correspondent David Shukman describes the logistics behind installing some of the world's largest wind turbines

Heart of the sea jack

Science correspondent David Shukman gets aboard a sea jack to see how this construction vessel is used to install wind turbines.

Science correspondent David Shukman discovers how the sea jack manages to lift loads of over 10,000 tonnes

Meet the captain

Science correspondent David Shukman talks to Jakob Neergaard, the captain of the sea jack, about what it is like to install wind turbines in the Irish Sea.

Science correspondent David Shukman talks to Jakob Neergaard, the captain of the sea jack, about the pressures of his job

Building a tower

Science correspondent David Shukman looks at how the pieces of a wind turbine are put together at sea.

Aboard the sea jack, David Shukman looks at how the sections of a turbine are carefully pieced together

Timelapse

Science correspondent David Shukman talks to Jakob Neergaard, the captain of the sea jack, about what it is like to install wind turbines in the Irish Sea.

It takes up to 24 hours to install a turbine, see the process speeded up

Map

The sea jack is pulled by tugs across the Irish Sea, in a journey that can take up to two days.

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