Hainan is the smallest province of the People's Republic of China (PRC). The name "Hainan" also refers to Hainan Island, the main island of the province and it comprises some two hundred islands scattered among three archipelagos off the southern coast. The PRC government claims territories of the province extend to the southern Spratly Islands, Paracel Islands, and other disputed marine territory. Haikou on the northern coast of Hainan Island is the capital whilst Sanya is a well-known tourist destination on the south coast. Hainan Island is home to the People's Liberation Army Navy Hainan Submarine Base and strategic nuclear submarine naval harbor 18.221°N 109.686°E.