On 24 August, U-601 sank the Soviet steamer Kuybyshev (2,332 BRT). On 25 August, Admiral Scheer fell upon the Russian icebreaker Sibiryakov (under the command of Captain Anatoli Kacharava) right off the northwest coast of Russky Island at the northern end of the Nordenskiöld Archipelago. After putting up resistance, Sibiryakov was sunk in an unequal battle.[1][2]