Stepan Osipovich Makarov was a Russian vice-admiral, commander in the Imperial Russian Navy, oceanographer, member of the Russian Academy of Sciences, and author of several books. He was a pioneer of insubmersibility theory, and developer of a Cyrillic-based semaphore alphabet. A proponent of icebreaker use, he supervised the first ever polar icebreaker construction. Makarov also designed several ships.
Makarov saw service in the Russo-Turkish War as a captain, and ordered the first ever successful attack with a self propelled torpedo. He served again in the Russo-Japanese War as vice-admiral and was assigned to the defense of Port Arthur, where he was hailed as a competent and aggressive commander. On 13 April 1904 Makarov led his flotilla to the aid of a destroyer that had been ambushed by the Japanese.
Wikipedia https://en.wikipedia.org/wiki/Stepan_Makarov
Address (Unnamed Road), Владивосток, Russia
Coordinates 43°6'57.841" N 131°52'37.379" E