The Russians under Zakhar Chernyshev and Pyotr Rumyantsev stormed Kolberg in Pomerania, while the Austrians captured Schweidnitz. The loss of Kolberg cost Prussia its last port on the Baltic Sea. A major problem for the Russians throughout the war had always been their weak logistics, which prevented their generals from following up their victories, and now with the fall of Kolberg, the Russians could at long last supply their armies in Central Europe via the sea. The fact that the Russians could now supply their armies over the sea, which was considerably faster and safer (Prussian cavalry could not intercept Russian ships in the Baltic) than over the land threatened to swing the balance of power decisively against Prussia, as Frederick could not spare any troops to protect his capital. In Britain, it was speculated that a total Prussian collapse was now imminent.