HMS Myrmidon (1900)
[4] Four Reed boilers fed steam at 250 pounds per square inch (1,700 kPa) to triple expansion steam engines rated at 6,200 indicated horsepower (4,600 kW) and driving two propeller shafts, giving a speed of 30 knots (56 km/h; 35 mph).[6] Armament was a single QF 12 pounder 12 cwt (3 in-calibre or 76 mm) gun on a platform on the ship's conning tower (in practice the platform was also used as the ship's bridge), backed up by five 6-pounder guns, and two 18 inch (450 mm) torpedo tubes.[9] Commander Cecil Lambert was appointed in command in January 1902, and in September that year she was part of a squadron visiting Nauplia and Souda Bay off Crete for combined manoeuvres of the Mediterranean and Channel Fleets, during which she was declared as being sunk by the umpires of the exercise when she engaged two destroyers of an opposing fleet, mistaking them for torpedo boats.[12] In September 1907, Myrmidon, based at Portsmouth as part of the First Destroyer Flotilla of the Channel Fleet, started a refit at Sheerness dockyard, with her boilers being retubed and her hull and machinery refurbished, with the refit completing in April 1908.[15][16] On 30 August 1912, the Admiralty directed all destroyers were to be grouped into classes designated by letters based on contract speed and appearance.