of Washington to collect oceanographic data until 1979 during which the development of SPURV II began to provide better movement performance and better sensing capabilities. 1970s Scientists from the Autonomous and Control Processes Institute took interest in the developments of the AUV “SCAT” which led to the introduction of the UUVs “L1” and “L2” in 1974. “L1” and “L2” are AUV models used for the further development of technology and oceanographic mapping respectively. 1980s Further development of the Remotely operated Vehicle (ROV) brought forth the creation of the Autonomous and Remote controlled submarine (ARCS) in 1983 by the ISE ltd. company in partnership with the “International Submarine Engineering”. ARCS was also classified as a Remotely controlled underwater vehicle (ROUV) because of its 32-bit Motorola processor which allowed for the remote control it featured. This UUV further served as a testing platform, improving on the battery life, navigational, and communicational systems having its first dive in 1987. 1990s When the Russian Institute of Marine Technology Problems introduced the Solar Autonomous underwater vehicle (SAUV), it was the start of longer term exploration missions without the need of retrieving the UUV for maintenance. The introduction of solar panels on UUVs began with the SAUV in 1987 and was kept during the making of SAUV II. Solar panels enabled lengthier missions, with the ability to use features such as gps and high payloads more frequently due to its ease of charge. Advancements in battery life enabled for the creation of “gliders” in 1995 which would allow for the long term dives in which the UUVs would remain submerged for weeks or even months at a time. 2000s UUVs begin to be taken into consideration for more than testing tools for other underwater missions due to the increase number of user internationally. There was also an increase in funding for the UUV technology development. The rise in users internationally led to the increase demand for UUV technology outside of government agencies and the commercial sale of UUVs started, expanding the research based use of the UUV to a more industrial/commercial based use. 2016 incident On December 16, 2016, a Chinese warship in South China Sea seized an underwater drone that was in the process of being retrieved by the U.S. Navy survey ship USNS Bowditch. A day later, the Chinese Defense Ministry said it will return the drone to the United States. The Pentagon confirmed