In 1989, mainland China and Japan began surveying the Nanhai No. 1, a vessel sitting under 20 meters of water off the coast of Yangjiang, Guangdong Province.
1989 年，中國大陸與日本兩國就廣東省陽江海域水下 20 公尺處一艘沉船進行合作調查，船隻代號「南海一號」。