Hydrographer of the Navy

• Post — Hydrographer of the Navy • Insignia Size — 150 • Incumbent — Rear Admiral Angus Essenhigh • Incumbent Since — 2023 • Department — Ministry of Defence • Reports To — First Sea Lord • Nominator — Admiralty Board • Appointer — Secretary of State for Defence • Term Length — 1–4 years • Inaugural — Alexander Dalrymple

Before the establishment of the post, captains of Royal Navy ships were responsible for the provision of their own charts. In practice this meant that ships often sailed with inadequate information for safe navigation, and that when new areas were surveyed, the data rarely reached all those who needed it. The Admiralty appointed Alexander Dalrymple as hydrographer on 12 August 1795, with a remit to gather and distribute charts to HM Ships. Within a year existing charts had been collated, and the first catalogue published. It was five years before the first chart—of Quiberon Bay in Brittany—was produced by the Hydrographer. Under Dalrymple's successor, Captain Thomas Hurd, Admiralty charts were sold to the general public, and by 1825, there were 736 charts listed in the catalogue. In 1829, the first Sailing Directions were published, and in 1833, under Rear-Admiral Sir Francis Beaufort—of the eponymous Beaufort scale—the tide tables were first published. Notices to Mariners came out in 1834, allowing for the timely correction of charts already in use. Beaufort was certainly responsible for a step change in output; by the time he left the office in 1855, the Hydrographic Office had a catalogue of nearly 2,000 charts and was producing over 130,000 charts, of which about half were provided to the Royal Navy and half sold. In 1939, on the outbreak of World War II, the Hydrographic Office moved to Taunton, and the post of hydrographer moved with it. In 2001, a chief executive was appointed to run the United Kingdom Hydrographic Office as a profit-making agency of the British government, and at this time the roles of National Hydrographer and Hydrographer of the Navy were divided. The title of hydrographer devolved to Captain (hydrography and meteorology), a senior officer on the staff of the Commodore of the Devonport Flotilla, and the senior Royal Navy officer within the HM branch. As of 2010, the post has been renamed Captain (HM Ops), but continues to carry the title Hydrographer of the Navy.

• 1795–1808: Alexander Dalrymple • 1808–1823: Captain Thomas Hurd • 1823–1829: Rear Admiral Sir Edward Parry • 1829–1855: Rear Admiral Sir Francis Beaufort • 1855–1863: Rear Admiral John Washington • 1863–1874: Vice Admiral Sir George Richards • 1874–1884: Captain Sir Frederick Evans • 1884–1904: Rear Admiral Sir William Wharton • 1904–1909: Rear Admiral Sir Arthur Mostyn Field • 1909–1914: Rear Admiral Sir Herbert Purey-Cust • 1914–1919: Rear Admiral Sir John Parry • 1919–1924: Vice Admiral Sir Frederick Learmonth • 1924–1932: Vice Admiral Sir Percy Douglas • 1932–1945: Vice Admiral Sir John Edgell • 1945–1950: Rear Admiral Arthur Norris Wyatt • 1950–1955: Vice Admiral Sir Archibald Day • 1955–1960: Rear Admiral Kenneth Collins • 1960–1966: Rear Admiral Sir Edmund Irving • 1966–1971: Rear Admiral Steve Ritchie • 1971–1975: Rear Admiral Geoffrey Hall • 1975–1985: Rear Admiral Sir David Haslam • 1985–1990: Rear Admiral Roger Morris • 1990–1994: Rear Admiral John Myres • 1994–1996: Rear Admiral Sir Nigel Essenhigh • 1996–2001: Rear Admiral John Clarke Note: The title National Hydrographer was created with the appointment of Dr Wyn Williams as CEO UKHO and National Hydrographer after the Survey Squadron under Captain HM who assumed the title Hydrographer of the Navy (who became a Non-Exec Board Member of UKHO) was brought under CINCFLEET, this carried on with his successor Mr Mike Robinson as CEO, but the separate role of National Hydrographer (and Deputy CEO UKHO) was created in 2006 and filled in turn by: • 2006–2010: Rear Admiral Ian Moncrieff • 2010–2012: Rear Admiral Nick Lambert • 2012–2015: Rear Admiral Tom Karsten • 2015–2018: Rear Admiral Tim Lowe • 2018–2023: Rear Admiral Peter Sparkes • 2023–Present: Rear Admiral Angus Essenhigh Moncrieff, Lowe and Sparkes also went on to become CEO UKHO after their time as NH Captain HM and Hydrographer of the Navy in this period: • 2001–2003: Captain Mike Barritt • 2003–2005: Captain David Lye • 2005–2007: Captain Ian Turner • 2007–2010: Captain Robert Stewart • 2010–2012: Captain Vaughan Nail • 2012–2013: Captain Stephen Malcolm • 2013–2016: Captain David Robertson • 2016–2017: Captain Matt Syrett • 2017–2019: Captain Gary Hesling • 2019–2021: Captain Derek Rae • 2021–2023: Commander Mathew J Warren • 2023-2026: Commander Adam Coles