The United Kingdom Hydrographic Office (UKHO) is the UK's agency for providing hydrographic and marine

geospatial data Geographic data and information is defined in the ISO/TC 211 series of standards as data and information having an implicit or explicit association with a location relative to Earth (a geographic location or geographic position). It is also ca ...

to mariners and maritime organisations across the world. The UKHO is a trading fund of the Ministry of Defence (MoD) and is located in

Taunton Taunton () is the county town of Somerset, England, with a 2011 population of 69,570. Its thousand-year history includes a 10th-century monastic foundation, Taunton Castle, which later became a priory. The Normans built a castle owned by the ...

Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_ ...

, with a workforce of approximately 900 staff. The UKHO is responsible for operational support to the Royal Navy and other defence customers. Supplying defence and the commercial shipping industry, they help ensure Safety of Life at Sea (SOLAS), protect the marine environment and support the efficiency of global trade. Together with other national hydrographic offices and the International Hydrographic Organization (IHO), the UKHO works to set and raise global standards of hydrography, cartography and navigation. The UKHO also produces a commercial portfolio of ADMIRALTY Maritime Data Solutions, providing SOLAS-compliant charts, publications and digital services for ships trading internationally.

History

Establishment and early operation

The

Admiralty Admiralty most often refers to: *Admiralty, Hong Kong *Admiralty (United Kingdom), military department in command of the Royal Navy from 1707 to 1964 *The rank of admiral *Admiralty law Admiralty can also refer to: Buildings * Admiralty, Traf ...

's first Hydrographer was

Alexander Dalrymple Alexander Dalrymple FRS (24 July 1737 – 19 June 1808) was a Scottish geographer and the first Hydrographer of the British Admiralty. He was the main proponent of the theory that there existed a vast undiscovered continent in the South P ...

, appointed in 1795 on the order of

King George III George III (George William Frederick; 4 June 173829 January 1820) was King of Great Britain and of Ireland from 25 October 1760 until the union of the two kingdoms on 1 January 1801, after which he was King of the United Kingdom of Great Br ...

and the existing charts were brought together and catalogued. The first chart Dalrymple published as Hydrographer to the Admiralty (of

Quiberon Bay Quiberon Bay (french: Baie de Quiberon) is an area of sheltered water on the south coast of Brittany. The bay is in the Morbihan département. Geography The bay is roughly triangular in shape, open to the south with the Gulf of Morbihan to t ...

Brittany Brittany (; french: link=no, Bretagne ; br, Breizh, or ; Gallo language, Gallo: ''Bertaèyn'' ) is a peninsula, Historical region, historical country and cultural area in the west of modern France, covering the western part of what was known ...

) did not appear until 1800. He also issued Sailing Directions and Notices to Mariners (NMs). Dalrymple was succeeded on his death in 1808 by Captain

Thomas Hurd Thomas Hannaford Hurd ( bapt. 30 January 1747 – 29 April 1823) was an officer of the Royal Navy, who rose to the rank of captain, becoming the second Hydrographer of the Navy, a Superintendent of Chronometers and a Commissioner on the Boar ...

, under whose stewardship the department was given permission to sell charts to the public in 1821. In 1819 Captain Hurd entered into a bi-lateral agreement with

Denmark ) , song = ( en, "King Christian stood by the lofty mast") , song_type = National and royal anthem , image_map = EU-Denmark.svg , map_caption = , subdivision_type = Sovereign state , subdivision_name = Danish Realm, Kingdom of Denmark ...

to exchange charts and publications covering areas of mutual interest. This is thought to be the earliest formal arrangement for the mutual supply of information between the British and any foreign Hydrographic Office. Hurd developed the specialism of Royal Navy hydrographic surveyors. Rear-Admiral Sir W. Edward Parry was appointed Hydrographer in 1823 after his second expedition to discover a

Northwest Passage The Northwest Passage (NWP) is the sea route between the Atlantic and Pacific oceans through the Arctic Ocean, along the northern coast of North America via waterways through the Canadian Arctic Archipelago. The eastern route along the Arc ...

. In 1825 some 736 charts and coastal views were being offered for sale by the Hydrographic Office.

Explorations

HMS challenger William Frederick Mitchell

In 1828 Captain Parry and the Royal Society organised a scientific voyage to the

South Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe an ...

, in collaboration with the Hydrographers of France and Spain, using . In 1829, at the age of 55, Rear-Admiral

Sir Francis Beaufort Rear-Admiral Sir Francis Beaufort (; 27 May 1774 – 17 December 1857) was an Irish hydrographer, rear admiral of the Royal Navy, and creator of the Beaufort cipher and the Beaufort scale. Early life Francis Beaufort was descended f ...

became Hydrographer. During his time as Hydrographer, he developed the eponymous Scale, saw the introduction of official

tide table Tide tables, sometimes called tide charts, are used for tidal prediction and show the daily times and levels of high and low tides, usually for a particular location. Tide heights at intermediate times (between high and low water) can be approxi ...

s in 1833 and instigated various surveys and expeditions. Several of these were by , including one to

Tierra del Fuego Tierra del Fuego (, ; Spanish for "Land of the Fire", rarely also Fireland in English) is an archipelago off the southernmost tip of the South American mainland, across the Strait of Magellan. The archipelago consists of the main island, Isla ...

and

Patagonia Patagonia () refers to a geographical region that encompasses the southern end of South America, governed by Argentina and Chile. The region comprises the southern section of the Andes Mountains with lakes, fjords, temperate rainforests, and g ...

in 1826. In 1831 Captain Beaufort informed Captain FitzRoy that he had found a

savant Savant syndrome () is a rare condition in which someone with significant mental disabilities demonstrates certain abilities far in excess of average. The skills that savants excel at are generally related to memory. This may include rapid calcu ...

for the latter's surveying voyage to South America,

Charles Darwin Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all species of life have descended fr ...

. After completing extensive surveys in

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...

he returned to

Falmouth, Cornwall Falmouth ( ; kw, Aberfala) is a town, civil parish and port on the River Fal on the south coast of Cornwall, England, United Kingdom. It has a total resident population of 21,797 (2011 census). Etymology The name Falmouth is of English or ...

via

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

and

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

in 1836. By the time of Beaufort's retirement in 1855, the Chart Catalogue listed 1,981 charts and 64,000 copies of them had been issued to the

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...

. In the 1870s, the Royal Naval Surveying Service supported the

Challenger expedition The ''Challenger'' expedition of 1872–1876 was a scientific program that made many discoveries to lay the foundation of oceanography. The expedition was named after the naval vessel that undertook the trip, . The expedition, initiated by Wi ...

, a scientific exercise that made many discoveries, laying the foundation of oceanography. The cruise was named after the mother vessel, . On her circumnavigation of the globe, 492 deep sea soundings, 133 bottom dredges, 151 open water trawls and 263 serial water temperature observations were taken. The Challenger crew used a method of observation developed in earlier small-scale expeditions. To measure depth, the crew would lower a line with a weight attached to it until it reached the sea floor. The line was marked in 25 fathom intervals with flags denoting depth. Because of this, the depth measurements from the Challenger were at best accurate to 25 fathoms (150 feet), or about 46 metres. As the first true oceanographic cruise, the Challenger expedition established an entire academic and research discipline. During the late 19th century, the UKHO took part in several international conferences, including the

International Meridian Conference The International Meridian Conference was a conference held in October 1884 in Washington, D.C., in the United States, to determine a prime meridian for international use. The conference was held at the request of U.S. President Chester A. ...

to determine a

prime meridian A prime meridian is an arbitrary meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great ...

for international use and other conferences working towards the establishment of a permanent international commission concerning hydrographic matters. Hydrographers to the Admiralty Board during this period included: Rear-Admiral

John Washington John Washington (1633–1677) was an English merchant who emigrated across the Atlantic Ocean and became a planter, soldier and politician in colonial Virginia. In addition to leading the local militia, and running his own plantations, Washin ...

, Rear-Admiral

George Henry Richards Sir George Henry Richards (13 January 1820 –14 November 1896) was Hydrographer of the Royal Navy from 1863 to 1874. Biography Richards was born in Antony, Cornwall, the son of Captain G. S. Richards, and joined the Royal Navy in 1832. ...

, Captain Sir Frederick J. O. Evans and Rear-Admiral Sir William J. L. Wharton.

20th century

During Rear-Admiral A. Mostyn Field's term as Hydrographer to the Admiralty Board, the Hydrographic Office lent instruments to the

Nimrod Expedition The ''Nimrod'' Expedition of 1907–1909, otherwise known as the British Antarctic Expedition, was the first of three successful expeditions to the Antarctic led by Ernest Shackleton and his second expedition to the Antarctic. Its main target, ...

of the British Antarctic Expedition led by

Ernest Shackleton Sir Ernest Henry Shackleton (15 February 1874 – 5 January 1922) was an Anglo-Irish Antarctic explorer who led three British expeditions to the Antarctic. He was one of the principal figures of the period known as the Heroic Age of ...

in 1907. Following the in 1912, the Safety of Life at Sea (SOLAS) convention was established, as well as the introduction of ice reporting and forecasting. During

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

, while Rear-Admiral Sir John F. Parry was Hydrographer of the Navy, the Hydrographic Office produced numerous new charts and products to support the Royal Navy. Following the war, the First International Hydrographic Conference was held in London. It led to the establishment in 1921 of the

International Hydrographic Organization The International Hydrographic Organization (IHO) is an intergovernmental organisation representing hydrography. , the IHO comprised 98 Member States. A principal aim of the IHO is to ensure that the world's seas, oceans and navigable waters a ...

. In the 1930s, the systematic and regular collection of oceanographic and naval meteorological data started. In the

Second World War World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

, while led by Vice-Admiral Sir John A. Edgell, chart printing moved to Creechbarrow House in

in June 1941. This was the first purpose-built chart making factory, and was designed by the Chief Draughtsman, Mr Jowsey. In 1968, compilation staff were transferred from Cricklewood to Taunton, thus bringing together the main elements of the Hydrographic Office. A purpose-built office, named after Alexander Dalrymple, was opened. Metrication and computerisation of charts began in the later 1960s and early 1970s under the leadership of Rear-Admiral Sir Edmund G. Irving (1960–1966), Rear-Admiral

George Stephen Ritchie Rear-Admiral George Stephen Ritchie CB DSC (30 October 1914 – 8 May 2012) was a British admiral noted for his cartographic and hydrographic work. Naval career Ritchie was born in Burnley, 1914, of Scottish parents, Sir Douglas Ritchie and Lad ...

(1966–1971), Rear-Admiral Geoffrey P. D. Hall (1971–1975) and Rear-Admiral Sir David W. Haslam (1975–1985). For centuries, data was mainly collected using ordinary Royal Navy ships. In 1953, the first purpose-built

survey vessel A survey vessel is any type of ship or boat that is used for underwater surveys, usually to collect data for mapping or planning underwater construction or mineral extraction. It is a type of research vessel, and may be designed for the purpo ...

was launched: . With the use of the

echo sounder Echo sounding or depth sounding is the use of sonar for ranging, normally to determine the depth of water (bathymetry). It involves transmitting acoustic waves into water and recording the time interval between emission and return of a pulse; ...

and other electronic equipment in the 20th century, there was a big increase in the quantity and quality of the data collected. The technology used to collect data also improved with the first commercial use of multibeam survey technology in 1977; undertook the first

side-scan sonar Side-scan sonar (also sometimes called side scan sonar, sidescan sonar, side imaging sonar, side-imaging sonar and bottom classification sonar) is a category of sonar system that is used to efficiently create an image of large areas of the sea ...

of Mount's Bay, Cornwall, in 1987. The work has since been continued by the Bulldog-class survey vessels which form the "Hydrographic Squadron". In 1994, the Hydrographer of the Navy also became the Chief Executive of UKHO and the post was held by Rear-Admiral Nigel R. Essenhigh (1994–1996) and Rear-Admiral John P. Clarke (1996–2001).

Publications

The UKHO continues to serve the

as its prime customer by supplying hydrographic and geospatial data. The UKHO's products and services are sold to merchant mariners and leisure users through its commercial portfolio of ADMIRALTY Maritime Data Solutions. In addition to traditional paper nautical charts and publications, the ADMIRALTY Maritime Data Solutions range has expanded to include a number of digital products and services. In 1996, the UKHO developed ADMIRALTY Raster Chart Service, a raster navigational chart service for

Electronic Chart Display and Information System An Electronic Chart Display and Information System (ECDIS) is a geographic information system used for nautical navigation that complies with International Maritime Organization (IMO) regulations as an alternative to paper nautical charts. IMO re ...

. This was followed in 2008 by ADMIRALTY Vector Chart Service, offering 15,750 fully vectorised Electronic Navigational Charts (ENCs). The UKHO produces over 200 nautical publications, which are available as e-Nautical Publications or in the Digital Publications suite. Notable publications include ''Sailing directions (Pilots)'', ''Tide tables'', ''List of Radio Signals'', ''List of Lights and Fog Signals'' and the ''Mariner’s Handbook''. The UKHO also offers astronomical publications from

HM Nautical Almanac Office His Majesty's Nautical Almanac Office (HMNAO), now part of the United Kingdom Hydrographic Office, was established in 1832 on the site of the Royal Observatory, Greenwich (ROG), where ''The Nautical Almanac'' had been published since 1767. HMNAO ...

, including ''

The Nautical Almanac ''The Nautical Almanac'' has been the familiar name for a series of official British almanacs published under various titles since the first issue of ''The Nautical Almanac and Astronomical Ephemeris'', for 1767: this was the first nautical alm ...

'' and ''

The Astronomical Almanac ''The Astronomical Almanac''The ''Astronomical Almanac'' for the Year 2015, (United States Naval Observatory/Nautical Almanac Office, 2014) . is an almanac published by the United States Naval Observatory (USNO) and His Majesty's Nautical Almanac ...

'', among others. Today, the UKHO has expertise in areas such as bathymetry, oceanography, geodesy and data science. It provides advice on technical aspects of Law of the Sea, specialising in maritime limits and boundaries. It also delivers a range of cartographic and ENC training programmes delivered internationally to develop the core skills of marine cartography. Since 2015, the UKHO has supported the delivery of the Commonwealth Marine Economies (CME) Programme in partnership

Cefas The Centre for Environment, Fisheries and Aquaculture Science (Cefas) is an executive agency of the United Kingdom government Department for Environment, Food and Rural Affairs (Defra). It carries out a wide range of research, advisory, consult ...

and NOC, a programme enabling Small Island Developing States (SIDS) to sustainably develop their marine economies.

Admiralty List of Lights and Fog Signals

The UKHO publishes the ''Admiralty List of Lights and Fog Signals'' covering the whole world in 12 volumes. The information is also available in digital form.

Access to data

The UKHO is the government department responsible for charting the seas. It is part of the Ministry Of Defence, and operates as a

trading fund A trading fund is an executive agency, government department or often simply a part of a department, that enables the department to handle its own revenues and expenses separately from overall government finances and more like a business, as opposed ...

, enabling it to be self-funding through sale of products and licensing of data. The UKHO sources much of its information from foreign governments to whom it pays royalty fees funded by the profits it makes. The UKHO grants six different licences, according to the use of the product. Whilst it generally allows use for non-navigational, non-commercial or low value purposes free of charge (over 80% of licences), where licensing is for use in a commercial product, a licence fee is charged. The UKHO is committed to the Information Fair Traders Scheme and makes available for reuse those data that are collected as part of its Public Task, which do not include third party Intellectual Property Rights. In the Information Fair Trader Scheme Report on the UKHO in April 2011 it states that the UKHO data will not be included in the Public Data Corporation to make government owned data more freely available, but it does recommend that the "UKHO should consider the introduction of a Free Navigational Licence" for non-commercial or low value use, consistent with its treatment of non-navigational use.

List of chief executives

* 1994–1996: Rear-Admiral

Nigel Essenhigh Admiral Sir Nigel Richard Essenhigh (born 8 November 1944) is a former Royal Navy officer who served as First Sea Lord and Chief of the Naval Staff from 2001 to 2002. He served as a navigating officer before commanding the Type 42 destroyer and ...

* 1996–2001: Rear-Admiral John P. Clarke *2001-2006: Wyn Williams * 2006–2011: Mike Robinson * 2011–2015: Rear Admiral Ian Moncrieff * 2015–2019: John Humphrey * 2019–2020: Rear Admiral Tim Lowe * 2020–present: Rear Admiral Peter Sparkes (acting)

References

External links

* {{DEFAULTSORT:Hydrographic Office, United Kingdom 1795 establishments in Great Britain Executive agencies of the United Kingdom government Maritime organizations Ministry of Defence (United Kingdom) National hydrographic offices Organisations based in Taunton Trading funds of the United Kingdom government Geographic data and information organisations in the United Kingdom