During the first hour of the battle, the British gained about three knots, and brought the range to 17,500 yards. The range after 9.45 is not given, but was certainly not lowered in a corresponding degree. This may have been due to increased speed on the part of the German leaders, or to the interference of German destroyers, which now figured for the first time as important factors in day action. Two of these attacks were delivered, one at 9.40 and another about an hour later, and though repulsed by British flotillas, they both caused interference with the British course and fire. The injury to the _Lion_, in the words of Admiral Beatty, "undoubtedly deprived us of a greater victory." The British wireless caught calls from Hipper to the High Seas Fleet, which (though this seems strange at the time of a battle cruiser sortie) is declared by the Germans to have been beyond reach at Kiel.[1] Worried by the danger to the _Lion_ in case of retreat before superior forces, and in the belief that he was being led into submarine traps and mine fields, Admiral Moore gave up the chase. The distance to Heligoland was still at least 70 miles; the German ships were badly injured; the course since 9.45 had been more to the northward; the Grand Fleet was rapidly approaching the scene. The element of caution, seen again in the Jutland battle 15 months later, seems to have prevented pressing the engagement to more decisive results. [Footnote 1: Capt. Persius, _Naval and Military Record_, Dec. 10, 1919.] The conditions of flight and pursuit obtaining at the Dogger Bank emphasized the importance of speed and long range fire. Owing to the fact that they had twice the angle of elevation (30 degrees), the German 11-inch and 12-inch guns were not outranged by the British 13.5-inch guns; and at 17,000 yards their projectiles had no greater angle of fall. The chief superiority of the larger ordnance therefore lay in their heavier bursting charges and greater striking energy, 12,800 foot-tons to 8,900 foot-tons. According to a German report, the first salvo that hit the _Seydlitz_ knocked out both after-turrets and annihilated their crews; and the ship was saved only by flooding the magazines.[1] [Footnote 1: Admiral van Scheer, quoted in _Naval and Military Record_, London, March 24, 1920.] _The Dardanelles Campaign_