He was born at Klagenfurt, into a family from Bohemia where they long held the office of mayor of Budweis. In 1620 they were ennobled in Austria with the addition of the German namevon Sterneck. Jacob Daublebsky von Sterneck was further created Freiherrvon Sterneck zu Ehrenstein in 1792. His son Joseph settled in Carinthia and purchased the castle of Krastowitz in Klagenfurt, where his son Maximilian was born in 1829. Maximilian Daublebsky von Sterneck was educated to be an officer in the then Austrian Navy, attaining the rank of lieutenant commander in 1859. He was promoted to commander in 1864 and later was appointed to command the flagship Erzherzog Ferdinand Max by rear-admiralWilhelm von Tegetthoff. In the Battle of Lissa, Daublebsky von Sterneck succeeded in by ramming the Italian flagship Re d'Italia, which capsized and sank. For his services during the battle, he was awarded the Military Order of Maria Theresa. In an 1880 painting by Anton Romako, Daublebsky is pictured at Tegetthoff's side on the bridge during the ramming attack. , 1880. The creation of the Dual Monarchy in 1867 was accompanied by the reorganization of the naval service as the Austro-Hungarian Navy. Daublebsky von Sterneck was appointed port commander at Pola in 1869 with the rank of full captain and Chef der Marinesektion in November 1883 with the rank of Vizeadmiral. His efforts to modernize the Navy were hamstrung by interminable political friction between the Austrian and Hungarian halves of the empire. When Sir Edward J. Reed published the second half of his profile of the Continental navies in Harper's in February 1887, he dismissed the Austro-Hungarian Navy as antiquated and omitted any tabulation of information about the fleet's ships—in sharp contrast to his description of the fleet of Austria-Hungary's principal ally, Germany. Promoted full admiral in 1888, Daublebsky von Sterneck persevered in his efforts to modernize the Austro-Hungarian fleet until his death in Vienna in 1897. He initiated the construction - 1891–1898 - of the navy garrison Catholic Church of Our Lady of the Sea in Pola's suburb San Policarpo. His body was interred in that church, to which Daublebsky von Sterneck had devoted much effort. His heart however was placed in the family crypt in the castle of Krastowitz. Daublebsky von Sterneck was succeeded as head of the navy by Hermann von Spaun.
