SINGAPORE, July 21 - Sembcorp Marine said on Monday that its unit PPL Shipyard has won a contract to build a $220 million jack-up rig for the Egyptian Drilling Company. This is the second rig that PPL is building for the oil firm, a joint venture between the Egyptian General Petroleum Corp and Denmark's AP Moeller Maersk , and is scheduled for delivery in mid-2010, SembMarine said in a statement.