Since spring 2009 it has been clear that HERRENKNECHT VERTICAL technology must soon prove its value not only on land, but also in the stormy North Sea. A contract for a deep drilling rig unit for an oil rig in the North Sea has been concluded with Cofely Oil and Gas B.V. The innovative Herrenknecht deep drilling rig is mounted on an arm of the mobile platform, the so-called jack-up. The rig is designed for the demanding conditions in the sea, and will be able to bore to a depth of around 3,000m.