Dates: 1913 - 1918
HMS E1 (laid down as HMS D9) was a British E class submarine built by Chatham Dockyard. Complement: 30. She was commissioned on 6 May 1913. During World War I she was part of the Baltic Submarine Flotilla, based at Reval (Tallinn).
She worked with HMS E5 and reconnoitered the Skagerrak as a prelude to sending submarines into the Baltic. Then on 15 October 1914, she and HMS E9 sailed from Gorleston in a successful attempt to penetrate the German defences and enter the Baltic. On 18 October 1914, E1 unsuccessfully attacked the armoured cruiser Furst Bismarck in Kiel Bay. On 19 August 1915, she torpedoed and damaged the German battlecruiser Moltke (23,000 tons) during the Battle of the Gulf of Riga.
E1 was scuttled on 3 April 1918 off Harmaja Light in the Gulf of Finland by her crew, along with E8, E9, E19, C26, C27, and C35 to avoid seizure by advancing German forces which had landed nearby.
The crews of the scuttled submarines were evacuated by Soviet ships to Petrograd and by rail to Murmansk, to join with the Allied intervention forces in North Russia, only weeks before hostilities cut railway lines to Murmansk.
