1910 in the Royal Navy

January

• 5 January.
  • Rear-Admiral F. C. Doveton Sturdee succeeded Rear-Admiral Charles J. Briggs as Rear-Admiral of the First Division, Home Fleet.
  • Rear-Admiral Arthur A. C. Galloway succeeded Rear-Admiral Cecil Burney as Rear-Admiral in command of the Devonport Division, Home Fleet.
• 20 January. Captain Sir Robert K. Arbuthnot, Bart. gave a speech at the annual dinner of the Auto-Cycle Union in which he criticised the German and British governments. He was relieved in command of H.M.S. Lord Nelson on 31 January and placed on half pay.
• 24 January. Admiral of the Fleet Lord Fisher stood down as First Sea Lord. Vice-Admiral Sir Arthur Winsloe steps down as Fourth Sea Lord
• 25 January. Admiral of the Fleet Sir Arthur Knyvet Wilson appointed First Sea Lord. Captain Charles E. Madden appointed Fourth Sea Lord.
• 26 January. Results of Gunlayers' Tests with Heavy Guns issued.

February

17 February. Rear-Admiral Ernest A. Simons succeeded Vice-Admiral Frederic W. Fisher as Admiral-Superintendent of Malta Dockyard.

March

• 6 March. Vice-Admiral Sir Arthur Winsloe succeeded Vice-Admiral the Hon. Sir Hedworth Lambton as Commander-in-Chief on the China Station.
• 22 March. Results of 1909 Battle Practice published.

April

• 29 April. Argo Company accepts Board of Admiralty's offer to purchase forty-five Argo rangefinder mountings and indicators over the next three years at £1,350 each, with £15,000 paid in advance.
• 30 April. Admiral Sir Edmund S. Poë succeeded Admiral the Hon. Sir A. G. Curzon-Howe as Commander-in-Chief of the Mediterranean Fleet.

August

• 9 August.
  • Vice-Admiral Sir George A. Callaghan succeeded Vice-Admiral Sir Berkeley Milne as Second-in-Command, Home Fleet.
  • Rear-Admiral T. H. Martyn Jerram succeeded Vice-Admiral Callaghan as Second-in-Command, Mediterranean Fleet.
• 26 August. Rear-Admiral Sackville H. Carden succeeded Rear-Admiral Sir Colin R. Keppel as Second-in-Command of the Atlantic Fleet.

September

• 20 September. Lionel G. Tufnell succeeded Rossyn E. Wemyss as Commodore, Second Class at the Royal Naval Barracks, Devonport.
• 26 September. Rear-Admiral Sir Douglas A. Gamble relieved Sir Henry B. Jackson as Rear-Admiral Commanding, Sixth Cruiser Squadron.

October

• 4 October. Rear-Admiral Robert H. S. Stokes succeeded Rear-Admiral Charles H. Cross as Admiral-Superintendent of Devonport Dockyard.
• 19 October. Rear-Admiral George E. Patey relieved Rear-Admiral Edward E. Bradford as Rear-Admiral of the Second Division, Home Fleet.
• 25 October. Alexander L. Duff succeeded Christopher G. F. M. Cradock as Commodore, Second Class at the Royal Naval Barracks, Portsmouth.

November

• 17 November. Rear-Admiral Arthur H. Limpus succeeded Rear-Admiral Frederic E. E. Brock as Rear-Admiral in command of the Portsmouth Division, Home Fleet.
• 29 November. Rear-Admiral Sir George J. S. Warrender succeeded Rear-Admiral Robert S. Lowry as Rear-Admiral Commanding the Second Cruiser Squadron.

December

• 17 December. Rear-Admiral Paul W. Bush relieved Vice-Admiral George Le C. Egerton as Commander-in-Chief on the Cape of Good Hope Station.
• 20 December. Vice-Admiral (Acting) Sir John R. Jellicoe succeeded H.S.H. Prince Louis of Battenberg as Commander-in-Chief, Atlantic Fleet.
• 31 December. Vice-Admiral George F. King-Hall succeeded Sir Richard Poore as Commander-in-Chief on the Australian Station.