Drydocks World, an international service provider to the marine and maritime sectors including to the oil and gas and energy industry, announced the completion of major repair and refurbishment of National Drilling Company’s (NDC) jack up drilling rig Al Ittihad. The company said it has carried out maintenance work on several of NDC’s rigs, and the numbers have increased over the years: Drydocks World received four orders in 2013 to add to the eight projects completed previously.