Rear Admiral Xawery Stanisław Czernicki (1882–1940) was a Polish engineer, military commander and one of the highest-ranking officers of the Polish Navy. Considered one of the founders of Polish Navy's logistical services, he was murdered by the Soviet NKVD during the Katyn massacre. Life Xawery Czernicki was born on 16 October 1882 in a szlachta family in the village of Giedejki (Giedeikiai) in the Oshmyansky Uyezd of the Vilna Governorate (present-day Ashmyany District. After graduating from a local gymnasium in 1901, Czernicki joined the Imperial Naval Engineering School in Kronstadt. In 1905 he graduated from the shipbuilding faculty and joined the Russian Navy in the basic officer's rank of michman. The following year he was admitted as the second lieutenant (later first lieutenant) and served as an engineer in the St. Petersburg naval base. In 1910 he became the head of a small naval shipyard in Sretensk (on the Shilka River, Amur basin), where he authored several river monitors. Until 1914 he also served as a deputy engineer and then lead engineer of the Gangut-class battleships Sevastopol and Petropavlovsk. Promoted in 1913 to the rank of captain, until the end of World War I Czernicki served as the lead hull designer in the naval shipyard in Reval (modern Tallinn, Estonia). In 1917 he was promoted to navy lieutenant colonel and the following year he resigned his post. In 1919 he returned to Poland and volunteered for the Polish Navy. He was admitted as the chief of Technical Services of the Vistulan Flotilla, the first unit of the newly reborn Polish naval forces, created even before Poland regained its Baltic shore. During the Polish-Bolshevik War Czernicki served as the commanding officer of the Modlin Fortress inland naval base. In 1925 he became the head of a commission supervising the construction of Gdynia naval base and the following year he also started to head a commission supervising the construction of ORP Burza, ORP Wicher, ORP Wilk, ORP Ryś and ORP Żbik in France. Promoted to the rank of Komandor, he returned to Poland in 1932 and became the Chief of Services and the Deputy Commander of the Chief of Polish Navy in the Ministry of Military Affairs. In 1938 he was again promoted, this time to the rank of rear admiral. World War II After the invasion of Poland in 1939, Czernicki was evacuated from Gdynia to Warsaw and then eastwards to