Aberdeen explorer Xcite Energy was waiting for a weather window yesterday after the rig due to drill on its Bentley oil field was diverted to waters off Macduff and Banff. The unusual visitor arrived over the weekend after weather in the North Sea meant it could not get out to the heavy-oil field. The Rowan Norway had left Dundee, where it underwent modifications, last Thursday. Bentley, where the rig is due to drill an extended well test, is 100 miles east of Shetland.