Spratly Island (Chinese: 南威島; pinyin: Nánwēi dǎo; Vietnamese: đảo Trường Sa), also known as Storm Island, with an area of 15 hectares, is the fourth largest of the naturally occurring Spratly Islands in the South China Sea, and the largest of the Vietnamese-occupied/claimed Spratly islands.It is also claimed by the People's Republic of China and the Republic of China (Taiwan).