That morning she was towed by the light cruiser to Terschelling along with which was towed by the destroyer . "E6" and "E8" then made the first Heligoland Bight patrol. On 28 August 1914, "E6" was one of eight submarines that took part in a raid against the German Heligoland Bight patrol using surface ships. "E6", together with and "E8" were deployed as bait, with orders to try and get spotted in order to draw German destroyer patrols into the clutches of British destroyers and light cruisers of the Harwich Force. Later in the day, when the light cruisers of the 1st Light Cruiser Squadron came up to support the British surface forces, they spotted "E6" and, mistaking her for a German submarine, tried to ram her. On 25 September 1914, "E6" fouled a mine on her hydroplane guard when on patrol in the Heligoland Bight, but managed to free herself and escape.