Tuas Naval Base (TNB) is the second naval base in the history of the Republic of Singapore Navy (RSN). Located at the western tip of Singapore, it occupies 0.28 km² (0.11 sq mi) of land. It was officially opened on 2 September 1994 by Goh Chok Tong, the second prime minister of Singapore. Currently, the missile corvettes, patrol vessels and mine counter-measures vessels are based at TNB.