The US Navy claims China has sent a surveillance ship to monitor a massive US-led multinational drill off Hawaii, even though China itself is participating in the exercise. An officer of the US Pacific Fleet said on Monday 21 July that the vessel deployed by the Chinese Navy is not part of its flotilla taking part in the RIMPAC drill, and it is engaging in intelligence-gathering without notification. The officer said the deployment does not violate international law since the area is outside US territorial waters. But he said the US Navy has taken all precautions necessary to protect critical information of RIMPAC participants. A US Defense Department official has expressed displeasure, saying it is bad form to send a vessel to monitor drills the country has been invited to. The Chinese Navy is taking part in the Rim of the Pacific exercise for the first time. US commanders were hoping the move would help build confidence between the two countries’ forces.