 Type 907A is designed by the 708th Institute of China State Shipbuilding Corporation, which is also more commonly known as China Shipbuilding and Oceanic Engineering Design Academy (中国船舶及海洋工程设计研究) nowadays.A single unit was completed by Guangxi Guijiang Shipyard in 1987, and named as Kancha (勘查, meaning survey in Chinese) 4.The ship is designed to conduct torpedo and mine trials and support other underwater weaponry tests.