A Chinese undersea monitoring buoy designed to collect acoustic and oceanographic data was recovered by an Indonesian fisherman in the Lombok Strait last week. The 3.7-meter device, identified by maritime security experts as capable of detecting submarines and nearby vessels, features logos from China's state shipbuilding corporation and was taken by Indonesia's Navy for examination. China claims the equipment drifted due to malfunction and follows international law on marine research, but security analysts note the timing is significant given Australia's recent nuclear submarine deal and China's growing interest in Indonesian waters—though experts acknowledge similar dual-use systems are operated by the US, Japan and India for both military and civilian research.