Heerema Fabrication Group has cut first steel for the US$2.26 billion Cygnus gas field located in the southern North Sea. The steel will be used in the 1600t Cygnus Alpha Wellhead Platform, the first of four. GDF Suez E&P operates the Cygnus partnership with 39.75% interest. Its partners include Centrica (48.75%) and Baynerngas (12.5%).