HMS Lysander was a Laforey-class destroyer that served with the Royal Navy during the First World War. Launched in August 1913 as HMS Ulysses, the ship was renamed the following month under an Admiralty order to become one of the first in what would be the norm, a class of destroyers named after successive letters of the alphabet. On commissioning, the vessel joined the Third Destroyer Flotilla and operated as part of the Harwich Force. The destroyer took part in the Battle of Heligoland Bight in 1914, attacking the German light cruiser Mainz and escorted the seaplane carriers Engadine and Riviera in an abortive attempt to attack the Cuxhaven airship base. During 1915, Lysander undertook anti-submarine patrols and escorting duties, coming under fire from German short-based batteries while