North Sea Crude-Forties dips, Ekofisk cargoes delayed

* Forties trades at dated Brent plus 50 cents * Eight December Ekofisk loadings delayed * New VLCC slotted in for Jan. South Korea trip LONDON, Dec 5 (Reuters) - North Sea Forties crude oil differentials dipped on Thursday as buying interest eased slightly, although Ekofisk output has taken a hit from a winter storm, tightening December supply. The UK Met Office issued a severe weather warning for very rough seas and hurricane force winds on Thursday. Traders said that ei