Admiralty
From WikiPOBia
The Admiralty, or more fully the Board of Admiralty, was the supreme governing body of the Royal Navy, and had been so since the reign of Charles II. Based in a handsome eighteenth-century building in Whitehall, London, it consisted of a First Lord (who was sometimes a naval man but more often a politician), about six other Lords, a First Secretary who signed commissions and was the designated recipient of the reports known as Admiralty Letters, and a Second Secretary who was responsible for much of the day-to-day running of the office, together with a moderate clerical staff. The Lords were officially known as 'The Commissioners for Executing the Office of Lord High Admiral'.
Notable First Lords during the canonic period included Lord Cornwallis, Lord Melville (a close relative of Jack Aubrey's friend Heneage Dundas) and Lord Barham. (The stupid and irresponsible anonymous First Lord of HMS Surprise occupies the chronological place of Lord Barham but is not to be identified with him, since Barham had been a capable sea-officer and was noted for his sound grasp of administration.) The First Secretaries during this time were Sir Evan Nepean (1795-1804), William Marsden FRS (1804-1809) and John Wilson Croker (1809-1830). The Second Secretary for most of the period was John Barrow (1804-1845, with a short interval in 1806; O'Brian unhistorically dismisses him to a sick-bed in order to give a free field to his imagined deputy, the nefarious Andrew Wray.)
The Admiralty appointed officers and issued their commissions, determined the construction and disposition of ships, supervised the preparation and issuing of charts and received reports from officers and agents throughout the maritime world. From the late 1790s onward, a telegraph installation on the roof of the Whitehall building was the centre of a communications system which could receive simple messages from the coast in a matter of minutes.