China Shipbuilding Industry Corporation
In 1969, the 705th Research Institute of China Shipbuilding Industry Corporation (CSIC) led a team consisting of more than eighty research establishments and factories had completed No. 750 Deep Water Test Range, which was the main test range for Chinese torpedoes, depth charges and naval mines. However, the test range has serious limitations when the naval weaponry tested sunk to the bottom, because there was no equipment at the time to salvage the test samples at the bottom of the test range. In addition to the financial and economical loss, the more damaging result was that the technical data was unavailable as the weaponry could not be retrieved from the bottom of the test range, thus greatly hindering the development of naval weaponry tested.