First Sea Lord

The First Sea Lord and Chief of Naval Staff (1SL/CNS). is the professional head of the United Kingdom's Royal Navy and the whole Naval Service; originally the title was the First Naval Lord. The concept of a professional "First Naval Lord" was introduced in 1805 and the title of the First Naval Lord was changed to "First Sea Lord" on the appointment of Sir Jackie Fisher in 1904. From 1923 onward, the First Sea Lord was a member of the Chiefs of Staff Committee; he now sits on the Defence Council and the Admiralty Board.