Britain's largest aircraft carrier "Ark Royal" anchors at Greenwich Port in downtown London, February 25. "Ark Royal", upon completing repair and drill, is in London for a six-day visit. Built and went into service in 1985, "Ark Royal" is 210 meters long, with a maximum beam of 36 metres (117 feet) and a displacement of 20,000 tonnes. She can host a maximum of 100 aircrafts on board. Once participated in Iraq War, she is one of three aircraft carriers in commission in Britain. (Xinhua Photo)