Lord Archibald Hamilton was a Royal Navy officer, nobleman and Whig politician who sat in the House of Commons from 1708 to 1747. In the 1690's, he was active in the English Channel pursuing French privateers, including Tyger out of Saint-Malo. Hamilton commanded the third-rate HMS Boyne at the Battle of Vigo Bay in October 1702 and then commanded the third-rate HMS Eagle at the Battle of Málaga in August 1704 during the War of the Spanish Succession. He was a controversial governor of Jamaica. Hamilton then joined the Board of Admiralty, ultimately serving as Senior Naval Lord.

The First Sea Lord and Chief of the Naval Staff (1SL/CNS) is a statutory position in the British Armed Forces usually held by a four star admiral. As the highest-ranking officer to serve in the Royal Navy, the chief is the principal military advisor on matters pertaining to the navy and a deputy to the Secretary of State for Defence. In a separate capacity, the CNS is a member of the Chiefs of Staff Committee and, thereby, a military advisor to the National Security Council, the prime minister and the monarch. The First Sea Lord is typically the highest-ranking officer on active duty of the Royal Navy unless the Chief of the Defence Staff is a naval officer. Admiral Ben Key was appointed First Sea Lord in November 2021.