As a senior artillery officer on the coastal defense battleship Admiral Ushakov, N.N. Dmitriev spent many months of dangerous ocean voyages and witnessed the complete defeat of Z.P. Rozhdestvensky’s squadron in the daytime battle on May 14, followed by night attacks by Japanese destroyers and the heroic battle of “Admiral Ushakov” with two Japanese armored cruisers, which significantly surpassed him in combat power. After reading these memoirs, the reader will learn about little-known facts about the campaign of the squadron of Rear Admiral N.I. Nebogatov.