A buoy (/bɔɪ/, North America more commonly, but not exclusively /ˈbuːi/) is a floating device that can have many purposes. It can be anchored (stationary) or allowed to drift with ocean currents. The etymology of the word is disputed.
The Albano lane system is a method of marking kayak, canoe and rowing race courses using lines of buoys. It was first used internationally in the 1960 Summer Olympics held on Lake Albano, Italy. It has since become an international standard for most FISA events and is used in Olympic rowing events.Buoy anti-tank obstacle
Buoy is a British type of anti-tank obstacle used to block roads intended to impede enemy movement. Buoys were widely deployed during the invasion crisis of 1940–1941. Each buoy was a truncated cone of concrete with a rounded bottom, about 2 feet 9 inches (84 cm) high, and with a 2 inches (50 mm) diameter hole through the axis. They would be placed in at least five rows across a roadway.
Buoys were intended as an alternative to a simple cylinder of concrete. The advantage of buoy was that it could be used to block or unblock a road quickly. Passing a rod or crossbar through a pair of buoys formed a wheeled axle that could easily be rolled into place; when the axle was removed the buoys could be separated and stood up. Although easily knocked over, the conical shapes could not be rolled very far, they would move unpredictably and out of the field of view of a tank driver, making it difficult to avoid them. They were eventually judged to be ineffective and phased out.Extant examples are often found by the roadside today.Buoy tender
A buoy tender is a type of vessel used to maintain and replace navigational buoys. The name is also used for someone who works on such a vessel and maintains buoys.
The United States Coast Guard uses buoy tenders to accomplish one of its primary missions of maintaining all U. S. Aids to Navigation (ATON).
The Canadian Coast Guard uses multi-use vessels (icebreaker and navigation aid) with the buoy tender platform.Deep-ocean Assessment and Reporting of Tsunamis
Deep-ocean Assessment and Reporting of Tsunamis (DART) is a component of an enhanced tsunami warning system.
By logging changes in seafloor temperature and pressure, and transmitting the data via a surface buoy to a ground station by satellite, DART enables instant, accurate tsunami forecasts. In Standard Mode, the system logs the data at 15-minute intervals, and in Event Mode, every 15 seconds. A 2-way communication system allows the ground station to switch DART into Event Mode whenever detailed reports are needed.Diving shot
A diving shot, or more formally, diving shot line is an item of diving equipment consisting of a weight (the shot), a line and a buoy. The weight is dropped on the dive site. The line connects the weight and the buoy and is used by divers to as a visual and tactile reference to move between the surface and the dive site more safely and more easily, and as a controlled position for in-water staged decompression stops
A "lazy shot" is a shot which is suspended above the bottom. It may be tethered to the main shot line at a convenient depth. It is used for decompression and frees the main shot line for other divers. The lazy shot's line does not need to be longer than the decompression depth and is often only deep enough for the longer stops. It only needs a weight heavy enough to provide diver buoyancy control and sufficient buoyancy to avoid being dragged down under reasonably foreseeable circumstances.Lifebuoy
A lifebuoy, ring buoy, lifering, lifesaver, life donut, life preserver or lifebelt, also known as a "kisby ring" or "perry buoy", is a life saving buoy designed to be thrown to a person in the water, to provide buoyancy and prevent drowning. Some modern lifebuoys are fitted with one or more seawater-activated lights, to aid rescue at night.
The lifebuoy is usually ring- or horseshoe-shaped and has a connecting line allowing the casualty to be pulled to the rescuer in a boat. They are carried by ships and are also located beside bodies of water that have the depth or potential to drown someone. They are often subjected to vandalism which, since the unavailability of lifebuoys could lead to death, may be punished by fines (up to £5,000 in the United Kingdom) or imprisonment.
The "kisby ring", or sometimes "Kisbie ring", is thought to be named after Thomas Kisbee (1792–1877) who was a British naval officer.The UK Royal Life Saving Society considers lifebuoys unsuitable for use in swimming pools because throwing one into a busy pool could injure the casualty or other pool users. In these locations, lifebuoys have been superseded by devices such as the torpedo buoy.In the United States, Coast Guard approved lifebuoys are considered Type IV personal flotation devices. At least one Type IV PFD is required on all vessels 26 feet or more in length.List of United States Coast Guard cutters
The List of United States Coast Guard Cutters is a listing of all cutters to have been commissioned by the United States Coast Guard during the history of that service. It is sorted by length down to 65', the minimum length of a USCG cutter.Lobster buoy hitch
The lobster buoy hitch is similar to the buntline hitch, but made with a cow hitch around the standing part rather than a clove hitch.
Like the buntline hitch, this knot is strong, secure and compact.Practical joke
A practical joke, or prank, is a mischievous trick played on someone, generally causing the victim to experience embarrassment, perplexity, confusion, or discomfort. A person who performs a practical joke is called a "practical joker". Other terms for practical jokes include gag, jape, or shenanigan.
Practical jokes differ from confidence tricks or hoaxes in that the victim finds out, or is let in on the joke, rather than being talked into handing over money or other valuables. Practical jokes are generally lighthearted and without lasting impact; they aim to make the victim feel humbled or foolish, but not victimized or humiliated. Thus most practical jokes are affectionate gestures of humour and designed to encourage laughter. However, practical jokes performed with cruelty can constitute bullying, whose intent is to harass or exclude rather than reinforce social bonds through ritual humbling.Some countries in Western culture traditionally emphasize the carrying out of practical jokes on April Fools' Day.Sonobuoy
A sonobuoy (a portmanteau of sonar and buoy) is a relatively small buoy (typically 13 cm or 5 in, in diameter and 91 cm or 3 ft long) expendable sonar system that is dropped/ejected from aircraft or ships conducting anti-submarine warfare or underwater acoustic research.Surface marker buoy
A surface marker buoy, SMB or simply a blob is a buoy used by scuba divers, with a line, to indicate the diver's position to their surface safety boat while the diver is underwater. Two kinds are used; one (SMB) is towed for the whole dive, and indicates the position of the dive group, and the other (DSMB) is deployed towards the end of the dive as a signal to the surface that the divers have started to ascend. Both types can also function as a depth reference for controlling speed of ascent and accurately maintaining depth at decompression stops.
A "safety sausage" is a low volume tubular buoy inflated at or near the surface to increase visibility of the diver.Thames Estuary
The Thames Estuary is where the River Thames meets the waters of the North Sea, in the south-east of Great Britain.
The limits of the estuary have been defined in several ways:
Although physically the head of Sea Reach or the Kent / Essex Strait, south of Canvey Island on the northern (Essex) shore presents a western boundary, the Tideway itself can be considered estuarine; it starts in south-west London at Teddington/Ham.
The Yantlet Line between the Crowstone in Chalkwell and the London Stone on the Isle of Grain.
The Nore sandbank between Havengore Creek, Essex, and Warden Point, Kent.
The eastern boundary of the estuary suggested in a Hydrological Survey of 1882-9 is a line drawn from North Foreland, Margate, Kent via the Kentish Knock lighthouse to Harwich in Essex. It is to this line that the typical estuarine sandbanks extend. The estuary downstream of the Tideway has a tidal movement of 4 metres, moving at a speed of up to 2.6 knots (4.8 km/h; 3.0 mph).
A line from Warden Point on the Isle of Sheppey Kent via Sea Reach No. 1 buoys to Havengore Head Essex.The estuary is one of the largest of 170 such inlets on the coast of Great Britain. It constitutes a major shipping route: its thousands of movements each year include large oil tankers, container ships, bulk carriers and roll-on/roll-off (ro-ro) ferries entering the estuary for the Port of London and the Medway Ports of Sheerness, Chatham and Thamesport.
The traditional Thames sailing barge worked in this area, designed to be suitable for the shallow waters in the smaller ports. More recently one of the largest wind farms in the UK has been developed in the estuary, located 8.5 km north of Herne Bay, Kent. The farm contains 30 wind turbines generating a total of 82.4MW of electricity. The much larger 630 MW London Array was inaugurated in 2013.
This area has had several proposed sites for the building of a new airport to supplement, or even to replace Heathrow/Gatwick. In the 1960s Maplin Sands was a contender; in 2002 it was to be at Cliffe, Kent. The new airport would be built on a man-made island in the estuary north of Minster-in-Sheppey
There is also some discussion about the need for a Lower Thames Crossing in order to alleviate traffic congestion at Dartford.
The Thames Estuary is the focal part of the 21st-century toponym, the "Thames Gateway", designated as one of the principal development areas in Southern England.The Bell Buoy
"The Bell Buoy" is a poem by Rudyard Kipling. It was first published with illustrations in Saturday Review, Christmas Supplement 1896 and then published in McClure's Magazine in February 1897 as "The Bell-Buoy", with illustrations by Oliver Herford. It was also included in the 1903 collection The Five Nations.
Some changes to the wording occurred sometime between the edition in McClure's and when it was collected in Rudyard Kipling's verse: inclusive edition, 1885-1918 (1919) as "The Bell Buoy". The other changes are minor and some may be the correction of printing errors.
T. S. Eliot included the poem in his 1941 collection A Choice of Kipling's Verse.Type 744 buoy tender
Type 744 buoy tender and its derivatives with the NATO reporting name Yannan (延南) class is a class of Chinese buoy tender that is in service with the People's Liberation Army Navy (PLAN) and Chinese civilian governmental establishments. It is a boat or vessel which services and replaces buoys.Type 999 buoy tender
Type 999 buoy tender is a series of Chinese buoy tenders that was first entered service with Chinese navy in 1965. Type 999 buoy tender adopts an U shaped hull, and to maintain positions in bad weather during operations, it is equipped with retractable stabilizing fins that are extended at work, and retracted in transit. Type 999 is capable of lifting 2-ton weight and has self right capability when rolling up to 45 degrees. After the first unit was completed at the end of 1964, preliminary trials were conducted under sea state 8 in the January of the following year, which proved successful. Further tests were conducted in Zhoushan in May 1965, and the after passing the test, it entered the service in the same year. Subsequently, a total of 12 were completed. These units are followed by an upgraded version designated as Type 999G, with displacement increased by 3 tons to 98, and a total of three were built. The final upgraded version of Type 999 buoy tender is Type 999HG, which improved living conditions onboard by upgrading subsystems such as cooking equipment. Specification:
Displacement (t): 95
Length (m): 28
Width (m): 5.2
Speed (kt): 11.5
Endurance (nm): 500
Propulsion (hp): 300
Armament: twin 14.5 mm machine gunUSCGC Sundew (WLB-404)
USCGC Sundew (WLB-404) is a 180-foot (55 m) sea going buoy tender (WLB). A Iris, or C-class tender, it was built by Marine Iron and Shipbuilding Corporation in Duluth, Minnesota. Sundew's preliminary design was completed by the United States Lighthouse Service and the final design was produced by Marine Iron and Shipbuilding Corporation in Duluth for the U.S. Coast Guard. On 29 November 1943 the keel was laid. It was launched on 8 February 1944 and commissioned on 24 August 1944. The original cost for the hull and machinery was $861,589.
Sundew is one of 39 original 180-foot (55 m) seagoing buoy tenders built between 1942-1944. All but one of the original tenders, USCGC Ironwood, were built in Duluth. Like all of these tenders, Sundew was named after a plant, in this case the sundew, a carnivorous plant from the genus Drosera.
In 1958, Sundew was assigned to Charlevoix, Michigan, and the following November helped in the rescue of two survivors from the Carl D. Bradley when it sank in a storm on Lake Michigan 47 miles (76 km) west-northwest of Charlevoix. Sundew remained at Charlevoix until 1981, when she was replaced by USCGC Mesquite. Sundew was then moved to Duluth, Minnesota, where it served until it was retired in 2004.
Sundew served 60 years for the Coast Guard and was decommissioned and retired on May 27, 2004. As part of the decommissioning, the vessel was given to the city of Duluth, its last home port, to be used as a museum ship. The services provided by the Sundew were taken up by USCGC Alder.
Due to a drop in tourism revenue, in 2009 the city of Duluth sold Sundew to local residents, Jeff & Toni Foster and David Johnson & Mary Phillipp. Sundew moved from its museum location in Duluth in the spring of 2010, and currently (2017) occupies a private slip near Duluth's Great Lakes Aquarium.USCG seagoing buoy tender
The USCG seagoing buoy tender is a type of United States Coast Guard cutter originally designed to service aids to navigation throughout the waters of the United States, and wherever American shipping interests require. The U.S. Coast Guard has maintained a fleet of seagoing buoy tenders dating back to its origins in the U.S. Light House Service (USLHS). These ships originally were designated with the hull classification symbol WAGL, but in 1965 the designation was changed to WLB, which is still used today.
Two classes of the WLB cutters have been produced. The older class, the 180 ft-class cutters, were 180 feet (55 m) long. Thirty-nine of these vessels were built from 1942–1944. All but one were constructed in the shipyards of Duluth, Minnesota. The 180 fleet, many of which served for more than 50 years, all went through different mid-life modifications that essentially resulted in three different classes of ship. All of the 180s are now retired and have been replaced with the new 225-foot (69 m) Juniper-class cutters. The last 180-foot cutter, USCGC Acacia, was decommissioned on 7 June 2006.
The Jonquil class of 189-foot (58 m) buoy tenders were U.S Army built mine planters acquired by the Coast Guard after World War II. Built around 1942, these vessels were designed for diesel engines but low pressure steam plants were installed instead.
The new Juniper buoy tenders are designed and operated as multi-mission platforms. While the 180s also performed other Coast Guard missions, they lacked the speed, communications, navigation and maneuverability of the new Junipers. Today, the Junipers conduct almost as much law enforcement as aid to navigation work; they are also outfitted to handle oil spill recovery, search and rescue, homeland security, and some ice breaking operations.United States Coast Guard Buoy Depot, South Weymouth
United States Coast Guard Buoy Depot, South Weymouth is a United States Coast Guard facility located in Weymouth, Massachusetts. It is located to the southeast of the South Weymouth MBTA station and west of the former Naval Air Station South Weymouth.Weather buoy
Weather buoys are instruments which collect weather and ocean data within the world's oceans, as well as aid during emergency response to chemical spills, legal proceedings, and engineering design. Moored buoys have been in use since 1951, while drifting buoys have been used since 1979. Moored buoys are connected with the ocean bottom using either chains, nylon, or buoyant polypropylene. With the decline of the weather ship, they have taken a more primary role in measuring conditions over the open seas since the 1970s. During the 1980s and 1990s, a network of buoys in the central and eastern tropical Pacific Ocean helped study the El Niño-Southern Oscillation. Moored weather buoys range from 1.5–12 metres (5–40 ft) in diameter, while drifting buoys are smaller, with diameters of 30–40 centimetres (12–16 in). Drifting buoys are the dominant form of weather buoy in sheer number, with 1250 located worldwide. Wind data from buoys has smaller error than that from ships. There are differences in the values of sea surface temperature measurements between the two platforms as well, relating to the depth of the measurement and whether or not the water is heated by the ship which measures the quantity.