HMS Teazer was an destroyer which served with the Royal Navy during World War I. The destroyer was launched in April 1917 and, on trial, proved to be one of the fastest afloat, exceeding . Attached to the Harwich Force, the ship supported the monitors , and in the bombardment of Zeebrugge in May 1918 and one of the final sorties of the war in the October following. The destroyer also took part in operations off the coast of Heligoland with a flying boat on a lighter, although the aircraft failed to take off. After the war, Teazer was kept in reserve until being sold to be broken up in 1931 following the signing of the London Naval Treaty that limited total destroyer tonnage. Design and development Teazer was one of two destroyers ordered by the British Admiralty from Thornycroft in December 1915 as part of the Seventh War Construction Programme alongside . The ships differed from the six preceding built by the yard in having all geared turbines and the aft gun being raised on a bandstand. The ship had an overall length of and was between perpendiculars. Beam was and draught . Displacement was normal and full load. Three Yarrow boilers fed steam to two sets of Brown-Curtis geared steam turbines rated at and driving two shafts, giving a design speed of , although Teazer achieved a class-leading speed of during trials. Three funnels were fitted, the centre one larger in diameter than the others. A total of of fuel oil was carried, giving a design range of at . Armament consisted of three QF 4in Mk IV guns on the ship's centreline. One was mounted on the forecastle, one aft and one between the second and third funnels. The ship also mounted a single 2-pounder (40 mm) pom-pom anti-aircraft gun for air defence and four torpedoes in two twin rotating mounts. The vessel had a complement of 82 officers and ratings. Construction and career Laid down in March 1916, the vessel was launched on 21 April 1917. Teazer was commissioned in July 1917 and joined the Harwich Force, serving as part of the Tenth Destroyer Flotilla. The name had been used by the Royal Navy for warships since 1794, most recently for a . On 22 May 1918, the Dover Patrol carried out a bombardment of the German held Belgian port of Zeebrugge, using the monitors ,