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BUOY. A piece of wood, or an empty barrel, floating on the water, to show the place where it is shallow, to indicate the danger there is to navigation. The act of Congress, approved the 28th September, 1850, enacts, " that all buoys along the coast, in bays, harbors, sounds, or channels, shall be colored and numbered, so that passing up the coast or sound, or entering the bay, harbor or channel, red buoys with even numbers, shall be passed on the starboard hand, black buoys, with uneven numbers, on the port hand, and buoys with red and black stripes on either hand. Buoys in channel ways to be colored with alternate white and black perpendicular stripes."

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--Port entrance gate--navigational marking (buoyage etc.) used for departures;
He added: "During the first quarter we launched a series of leading marine initiatives, like the maritime buoyage system and creating a safe and integrated marine environment, to enhance Dubai's reputation as a premier maritime hub.
The maritime buoyage system, which consists of 426 buoys, is based on organising maritime activities in beaches by allocating the first 50-100 meters of coastal waters for general swimming; while the next 100 metres is dedicated to light marine vessels, and the next 100 meters is considered a buffer zone.
It was responsible for the High and Low Lights at the mouth of the Tyne, its pilotage and its buoyage. It still sets exams for pilots for here and at Blyth and for deep sea divers in the North Sea and the English Channel.
indeed, the project is broken down into two markets: - a market related to the general earthworks components and the project clean-up: o realization of the reprofiling of the strips of tracks beyond the area between the verge and the civil engineering of marking, o realization of all remediation works, - a market related to the pavement and buoyage components: o realization of all pavement works o realization of all the buoyage works o realization of the reprofiling of the runway strip in the area contiguous to the verge and the civil engineering of the markup.
Contract notice: supply of equipments for equipping buoyage and signaling and glass filming services for vehicles of the sdis 76
Contract notice: reinforcement and modification work at the berth for the new subdivision buoyage
Contract notice: Paris le bourget airport - renovation of runway 03-21 - lot 14b infrastructure works and buoyage