The Mauritanian Navy was created on January 25, 1966, after the extension of Mauritania's territorial waters from 12 to 30 nautical miles (22 to 56 kilometres). By 1972 the navy had one small patrol gunboat and two small patrol craft that performed port control and customs duties. In 1987 the navy had thirteen boats. Of these boats, only eight were seaworthy, and the navy could send only two vessels out to open water at a time. Mauritania's exclusive economic zone (EEZ) extended 200 nmi (370 km) out from the coast, but even if effective coastal surveillance were possible, the navy's vessels would not be able to control Mauritania's waters. Nouadhibou housed the major naval base; Nouakchott housed a secondary base.