HMS Owl was an Acasta-class destroyer of the Royal Navy, launched in 1913. The destroyer was part of the Grand Fleet during the First World War and took part in the Battle of Jutland. Owl survived the war and was sold for scrap in 1921.
HMS Porpoise was an Acasta-class destroyer of the Royal Navy, which was built by Thornycroft between 1912 and 1914. Porpoise served through the First World War, taking part at the Battle of Jutland in 1916, where she was damaged. In 1920, she was sold to the Brazilian Navy serving under the name Alexandrino de Alencar and was renamed Maranhão in 1927. Maranhão remained in service when Brazil entered the Second World War, being used for patrol and convoy duties. She was disposed of in 1945.
HMS Partridge was a Royal Navy Admiralty M-class destroyer constructed and then operational in the First World War, later being sunk by enemy action in 1917. The destroyer was the sixth Royal Navy vessel to carry the name HMS Partridge.
HMS Pheasant was one of 85 Admiralty M-class destroyers built during the First World War for the Royal Navy. She hit and was sunk by a mine in 1917.
HMS Kempenfelt was a Marksman-class flotilla leader of the British Royal Navy. She was built by the Cammell Laird at their Birkenhead shipyard, with construction starting in 1914 and completed in August 1915. She served through the remainder of the First World War. She was sold for scrap in 1921.
HMS Liberty was a Laforey-class destroyer that served with the Royal Navy during the First World War. Launched on 15 September 1913 as HMS Rosalind, the ship was renamed on 30 September under an Admiralty order to become one of the first alphabetical class destroyers. On commissioning, the vessel joined the Third Destroyer Flotilla and operated as part of the Harwich Force. During Battle of Heligoland Bight, Liberty engaged with the German torpedo boats G194 and G196, and scored two hits on the cruiser Mainz. On 8 February 1917, the destroyer rammed and sank the German submarine UC-46. The vessel also played a minor role in the battles of Dogger Bank, Dover Strait and Jutland, as well as acting as a convoy escort and patrolling the Dover Barrage. With the cessation of hostilities, the ship was placed in reserve and sold to be broken up on 5 November 1921.
HMS Magic was an Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class were an improvement on the previous L class, capable of higher speed. Originally laid down as HMS Marigold by J. Samuel White at East Cowes on the Isle of Wight, the vessel was renamed before being launched in 1915. The ship served during the War as part of the Grand Fleet, mainly on anti-submarine and convoy escort duties from the port of Queenstown. In 1917, the destroyer took part in the Battle of Jutland and was one of a small number of British vessels that attacked the German fleet with torpedoes, although both torpedoes missed. In 1918, the ship struck a mine of the coast of Ireland and, although the damage was repaired, 25 people died. After the War, the destroyer was placed in reserve and decommissioned, being sold to be broken up in 1921.
HMS Medina was a Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class were an improvement on the previous L class, capable of higher speed. Originally laid down as HMS Redmill by J. Samuel White at East Cowes on the Isle of Wight, the vessel was renamed before being launched in 1916. The ship was allocated to the Grand Fleet and spent much of its service in anti-submarine warfare, either escorting convoys or involved in submarine hunting patrols. Although the destroyer attacked a number of German submarines, none were sunk. After the War, Medina was reassigned to a defence flotilla in Portsmouth and was eventually sold to be broken up in 1921.
HMS Plover was a Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class were an improvement on the previous L-class, capable of higher speed. Launched on 3 March 1916 by Hawthorn Leslie on the River Tyne, the vessel served as part of the Grand Fleet. Plover was based at Scapa Flow and took part in sorties in response to German submarine activity. After an uneventful war, the destroyer was placed in reserve and decommissioned, being sold to be broken up on 9 May 1921.
HMS Narwhal was a Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class were an improvement on the preceding L class, capable of higher speed. Launched on 30 December 1915, the vessel fought in the Battle of Jutland between 31 May and 1 June 1916 and subsequently served in anti-submarine and escort duties based at Cobh in Ireland. During February 1917, the destroyer rescued the crew of the Q-ship Farnborough, which had sunk and been sunk by the German submarine SM U-83, and rescued the armed merchantman Cameronia from SM U-50, The destroyer was transferred to Devonport during 1918 and, after the end of the war, was broken up there in 1920 after suffering a fatal collision the year before.
HMS Maenad was an Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class were an improvement on the previous L class, capable of higher speed. The vessel, launched in 1915, served in the Battle of Jutland in 1916, attacking both battleships and destroyers of the German High Seas Fleet. However, the vessel was notorious for undertaking a sharp manoeuvre which obstructed other destroyers in the fleet from attacking. Maenad also undertook anti-submarine patrols. In 1917, the ship mistakenly attacked the British submarine G12 thinking it was a German boat. The submarine escaped with damages. After the armistice that ended of the war, Maenad was placed in reserve until being sold to be broken up in Germany in 1921.
HMS Nicator was an Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class was an improvement on the preceding L class, capable of higher speed. Launched in February 1916, the destroyer fought in the Battle of Jutland between May and June 1916, operating in support of the British battlecruisers in their action against the German High Seas Fleet. Nicator claimed, along with sister ship Nestor, the destruction of a German torpedo boat, likely to be V27. The destroyer also attacked the German battlecruisers and battleships and, although no hits were recorded, kept the German ships from closing with the British. This was crucial to limiting losses to the British battlecruiser fleet. The vessel was subsequently fitted with paravanes for anti-submarine warfare. After the war, the destroyer was placed in reserve and subsequently sold to be broken up in May 1921.
HMS Pelican was a Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class were an improvement on the preceding L class, capable of higher speed. Launched on 18 March 1916, the vessel served with the Grand Fleet, taking part in significant actions on 19 August 1916 and 4 May 1917, as well as the fight between the British and German battlecruisers in the Battle of Jutland. The destroyer also undertook the other more general roles were typical of the type, including anti-submarine sweeps and escort duties for convoys. The destroyer had success driving away German submarines but did not sink any. After the end of the war, Pelican initially joined a Local Defence Flotilla but within a year had been placed in reserve and was subsequently sold to be broken up on 9 May 1921.
HMS Moorsom was an Admiralty M-class destroyer which served in the Royal Navy during the First World War. The M class was an improvement on the preceding L class, capable of higher speed. Moorsom, the first ship to enter navy service to be named after Admiral Sir Robert Moorsom, was launched in December 1914, initially serving as part of the Grand Fleet before being transferred to the Harwich Force the following year. Briefly rejoining the Grand Fleet, the destroyer saw service in the Battle of Jutland in 1916 supporting the British battlecruisers and received hits from a battleship of the German High Seas Fleet. Moorsom also undertook other duties, including escorting the troop ship Mauretania in June 1915 and the minelayer Princess Margaret in August 1915 and November 1916. Placed within the Dover Patrol, the destroyer formed part of the cover for monitors including Erebus and Terror on attacks on Ostend and Zeebrugge in May and June 1917, and April and May 1918. After the Armistice, the destroyer was placed in reserve and subsequently sold to be broken up in November 1921.
HMS Mystic was an Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class was an improvement on the previous L class, capable of higher speed. The vessel, originally named HMS Myrtle but renamed before being launched in 1915, joined the Grand Fleet as part of the Eleventh Destroyer Flotilla. The ship was assigned as part of a destroyer screen to protect the British battleships as they sought to destroy the German High Seas Fleet. During the Battle of Jutland in 1916, the destroyer saw action against German light cruisers and, as the evening fell, attacked the German battle line, but recorded no hits. During the following year, the vessel took part in a large anti-submarine patrol, but did not see any German submarines. Later in the war, the ship was transferred to the Coast of Ireland Station at Buncrana and escorted convoys at the start of their journey from ports on the Clyde and Mersey or at the end of their journey across the Atlantic Ocean. After the Armistice in 1918 that marked the end of the First World War, Mystic was placed in reserve before being decommissioned and subsequently sold to be broken up in 1921.
HMS Morris was an Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class were an improvement on the preceding L class, capable of higher speed. The ship, the only vessel to be named Morris to serve with the Royal Navy, was launched on 19 November 1914. Joining the Grand Fleet as part of a new flotilla, the destroyer was soon in action, serving as part of a destroyer screen during the Battle of Dogger Bank in January 1915 and an escort to the minelayer Princess Margaret during a skirmish with German torpedo boats eight months later. At the Battle of Jutland in 1916, the destroyer was a crucial part of the flotilla that drove the German torpedo boats away from the British battlecruisers. Morris received no hits during these confrontations. The destroyer assisted in the rescue of survivors from the R-class destroyer Simoom and the recovery of the damaged flotilla leader Botha in 1917. The ship also undertook general duties including escorting merchant ships, minelayers, monitors, and the seaplane carrier Vindex. After the armistice that ended the war, the destroyer was considered superfluous to requirements, Initially placed in reserve, Morris was decommissioned and, on 8 November 1921, sold to be broken up.
HMS Mons was an Admiralty M-class destroyer which served with the Royal Navy during the First World War and fought in the Battle of Jutland. The M class was an improvement on the preceding L class, capable of higher speeds. The ship, the first British naval vessel to be named after the Battle of Mons, was launched in 1915. Joining the Grand Fleet as part of the new Eleventh Destroyer Flotilla, the destroyer was soon in action, taking part in patrols that aimed to draw out the German High Seas Fleet. During the Battle of Jutland in 1916, Mons attacked the German light cruisers at the forefront of the German battleline but scored no hits. After the armistice, the destroyer was placed in reserve. Mons was found to be worn out by wartime operations and, despite only serving for six years, in 1921, was sold to be broken up.
HMS Mameluke was an Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class was an improvement on the preceding L class, capable of higher speeds. The ship, the first Royal Navy vessel to be named after the Mamelukes, a class of ex-slaves that ruled Egypt, was launched in 1915. The destroyer joined the Twelfth Destroyer Flotilla and, although under refit during the Battle of Jutland and so unable to participate, later took part in anti-submarine operations as part of this flotilla, although no submarines were sighted or sunk. The conditions of service in the North Sea meant that the destroyer was soon worn out and, after the armistice, Mameluke was placed in reserve. Despite a service life of only six years, the vessel was decommissioned and, in 1921, sold to be broken up.
HMS Mindful was a Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class destroyers were an improvement on the previous L-class, capable of higher speed. The vessel, launched in 1915, joined the Twelfth Destroyer Flotilla under the flotilla leader Faulknor. The ship saw action during the Battle of Jutland in May 1916 and helped sink the German torpedo boat SMS V48. In March 1917, the destroyer was involved in a friendly fire incident, nearly sinking the British submarine G12. In June that year, the vessel was involved in the sinking of the German merchant ship SS Gamma in Norwegian waters, which led to a diplomatic protest from the Norwegian government. At the end of the war, Mindful was withdrawn from service and, in 1921, sold to be broken up.
HMS Onslaught was a Admiralty M-class destroyer which served with the Royal Navy during the First World War. The M class were an improvement on the previous L-class, capable of higher speed. The vessel, launched in 1915, joined the Twelfth Destroyer Flotilla under the flotilla leader Faulknor. The ship saw action during the Battle of Jutland in May 1916, jointly sinking the German torpedo boat SMS V48 and launching the torpedo that sank the pre-dreadnought battleship Pommern, the only German battleship to be lost in the battle. Subsequently, the destroyer acted as an escort to other naval ships during the Action of 19 August 1916 and took part in anti-submarine operations. At the end of the war, Onslaught was withdrawn from service and, in 1921, sold to be broken up.
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