A naval destroyer equipped with sophisticated radar key to Japan's missile defence system collided with a fishing boat on Tuesday, the coast guard said, raising questions about the ship's monitoring of other ocean traffic.
Two men on board the 12-metre (39 ft) fishing boat were missing after the collision east of Tokyo, prompting a search by military and coast guard vessels and aircraft. The Atago destroyer, commissioned last spring, is the newest of Japan's five ships equipped with high-tech Aegis radar systems and typically carries a crew of around 300.