HMS "Maenad" was an which served with the Royal Navy during the First World War. The M class were an improvement on the previous , capable of higher speed. The vessel, launched on 10 August 1915, served in the Battle of Jutland between 31 May and 1 June 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. During the months running up to the battle, on 15 March, the vessel mistakenly attacked the British submarine thinking it was a German boat. The submarine escaped with damages. At the end of the war, the vessel was placed in reserve until being sold to be broken up in Germany on 22 September 1921.