This brochure contains 20 letters from Lieutenant of the Russian Imperial Navy N.V. von Den to his family, dated 1898-1905. 18 letters cover a short period of his service on the squadron battleship "Emperor Alexander III" during the Russo-Japanese War of 1904-1905. More precisely, the 7-month transition (from October to May) of the ships of the 2nd Pacific Squadron from Kronstadt to the Korean Strait