VIDEO: China unveils nuclear submarine fleet

The first nuclear submarine fleet from PLA North China Sea Fleet carried out a military drill as shown by footage released lately. The drill was aimed at testing the maneuver capability of the fleet in deep-sea navigation, long-distance operation, submarine communication and coordination with other battleships. Other than nuclear-powered submarines, a wide range of destroyers, frigates, depot ships and military helicopters were also engaged in the drill, according to military officers in the drill.