At 03:20 CET on 15 December 1914, Blücher, Moltke, Von der Tannru, the new battlecruiser Derfflinger, and Seydlitz, along with the light cruisers Kolberg, Strassburg, Stralsund, Graudenz, and two squadrons of torpedo boats left the Jade estuary. Markabku wuxuu ka dhoofiyay waqooyiga jasiiradda Heligoland, ilaa ay gaareen Horns Reefhouse, halkaas oo ay maraakiibtu gaareen. Laba iyo toban saacadood ka dib markii Hipper Squadron uu ka tagay Hipper Squadron, oo ka koobnaa afar Junkers oo ka koobnaa 14 doomood iyo siddeed doomood oo ka kooban Admiral Engin, ayaa sii waday weerarkii ay ku qaadeen maraakiibta dagaalka ee ugu waaweyn ee badda Ingiriiska. On 26 Diseembar 1914, Blücher, Moltke, Von der Tannru, the new battlecruiser Derfflinger, and Seydlitz, along with the light cruisers Kolberg, Strassburg, Stralsund, Graud
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