Strait of Gibraltar These "internal waves" continue to flow eastward and to refract around coastal features. They can sometimes be traced for as much as , and sometimes create interference patterns with refracted waves. Except for its far eastern end, the Strait lies within the territorial waters of Spain and Morocco. The United Kingdom claims around Gibraltar on the northern side of the Strait, putting part of it inside British territorial waters. As this is less than the maximum, it means, according to the British claim, that part of the Strait lies in international waters. The ownership of Gibraltar and its territorial waters
South Mole, Gibraltar Harbour north end of the South Mole, its "A" Head, is the site of the Gibraltar South Mole Lighthouse. The location gives the tower its alternate name of the Gibraltar "A" Head Lighthouse. Its light characteristic is a quick, flashing white light, with a range of fifteen nautical miles. The black, cast-iron, skeletal tower continues to be active as an aid to navigation and is operated by the Gibraltar Port Authority. The south entrance to Gibraltar Harbour, between the "A" Head of the South Mole and the "B" Head of the Detached Mole, is controlled by the Queen's Harbourmaster. Berths utilised