Devices or systems, external to a vessel, intended to assist a navigator to determine position or safe course or to warn of dangers or obstructions to navigation. For onboard navigational aids, use NAUTICAL CHARTS or NAUTICAL INSTRUMENTS.
Para uso de
BUOYS LIGHTHOUSES NAVIGATIONAL MARKERS PHARES BOUEES FAROS BOYAS الوسائل المعينة للملاحة وسائل معينة للملاحة 灯塔 浮标 Буи Маяки
