buoy


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buoy

(boi, bo͞o`ē), float anchored in navigable waters to mark channels and indicate dangers to navigation (isolated rocks, mine fields, cables, and the like). The shape, color, number, and marking of the buoy are all significant, but unfortunately there are two competing systems of color coding which have been adopted in different parts of the world. The International Association of Lighthouse Authorities (IALA) adopted a system in 1977 which uses red for the left–hand side of a channel returning from the sea and green for the right side. Because the American rule has always been "red to the right returning," the IALA accepted a second system in 1983 which would keep the traditional color–coding for U.S. waters. Both systems use yellow to indicate special zones, such as fishing areas, anchorages, dredging operations, etc. Although the spar buoys (upright posts) used in northern latitudes are usually wooden, large buoys are generally made of steel or iron. Nun buoys have conical tops; can buoys have flat tops. Buoys may be fitted with bells or whistles (usually operated by motion of the waves), and battery-powered light buoys are commonly used; radio buoys came into use in 1939. There are also mooring buoys, used for the anchoring of ships.

buoy

[bȯi]
(engineering)
An anchored or moored floating object, other than a lightship, intended as an aid to navigation, to attach or suspend measuring instruments, or to mark the position of something beneath the water.

buoy

a distinctively shaped and coloured float, anchored to the bottom, for designating moorings, navigable channels, or obstructions in a body of water
References in periodicals archive ?
Workmen cut up and removed the buoy from the beach yesterday.
The Pool Buoy became available in the market in May 2015 under Shade Science LLC, a company owned and operated by husband-and-wife team Jeremy and Erica Sloan.
Next year, we plan to restore another buoy at 'Halet Umm al Khayfan', known as 'Burj Al Asiri'.
The buoy system was designed using ULTIMO[TM] Lithium Ion Capacitors (LIC), for energy storage.
All buoys in the system connect via a bespoke VHF radio network which enables data to be downloaded at regular intervals, as well as allowing settings on the buoys to be changed remotely.
As we headed back to the ship, we tried to manually relaunch the buoy from the tube in accordance with the NATOPS checklist.
The Buoy House was additionally used as a central repair and maintenance base by Trinity House for all the buoys in the area, hence its name.
Police arrested a 23-year-old man Cramlington man when he was found in possession of the ring buoy in Cross Street in Gateshead on Friday.
Our condolences go out to Richard Guest and his yard and Bamboozelem - the owners of Dan Buoy, who were such big supporters of Pontefract.
Highway 101 might find themselves rubbernecking at an odd sight bobbing in the Pacific Ocean near Gardiner next summer: A 140-foot-tall buoy, the top 30 feet of it sticking out of the water.
The first buoy was installed in April at the mouth of Resurrection Bay.
Up to two SRVs would temporarily moor at the proposed deepwater port by means of a submerged unloading buoy system.