Sand Cay 10°23′N 114°29′E / 10.383°N 114.483°E / 10.383; 114.483, also known as Son Ca Island (Tagalog:Bailan; Chinese:敦谦沙洲; pinyin:Dunqian Shazhou; Vietnamese:đảo Sơn Ca) is a cay in the Tizard Bank of the Spratly Islands in the South China Sea. With an area of 7 hectares (17 acres), it is the ninth largest, and the fourth largest Vietnamese-occupied, of the Spratly Islands. The island has been occupied by Vietnam since 1974, (first by the Republic of Vietnam, then by the Socialist Republic of Vietnam after 1975). It is also claimed by the People's *****************, the ***************** (******), and the Philippines.