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ISSUE 12 October 2015 NEWS AND VIEWS FROM TEAM HUMBER MARINE ALLIANCE Caspian bound Engineering for all Abnormal load Vision becomes reality 4 6 87 Not always calm waters This is the Sea Challenger jack-up vessel specially designed for installing North Sea wind turbines even when the weather turns nasty. Built in China for new THMA member A2SEA with the strong growth of the North European offshore market in mind Sea Challenger is now into her second year of operation. She has a 900-tonne crane and can operate in water depths up to 55m. The 132m vessel can accommodate four Siemens 6MW turbines and up to 60 people.