@abcnews: LATEST: A U.S.-flagged oil tanker has collided with a Portuguese container ship in the North Sea, north of England, with both ships catching on fire, according to officials. At least 20 people have been brought to shore, with some casualties among them, an eyewitness from the port at Grimsby told ABC News. Not all crew members have been accounted for yet. #collision #northsea #news #abcnews