Nikolay Viktorovich Yung (Russian: Никола́й Ви́кторович Юнг ; 4 November [O.S. 23 October] 1855  – 29 May [O.S. 16 May] 1905 ) was a career officer in the Imperial Russian Navy, noted for his participation in the Battle of Tsushima in the Russo-Japanese War as captain of the battleship "Oryol" .
The Korea Strait is a sea passage between Japan and South Korea, connecting the East China Sea and the Sea of Japan in the northwest Pacific Ocean.
 The strait is split by the Tsushima Island into the western channel and the Tsushima Strait (eastern channel).
Tsushima Island (対馬 , Tsushima ) is an island of the Japanese archipelago situated in the Korea Strait, approximately halfway between the Japanese mainland and the Korean Peninsula.
 The main island of Tsushima was once a single island but was divided into two in 1671 by the Ōfunakoshiseto canal and into three in 1900 by the Manzekiseto canal.
 These canals were driven through isthmuses in the center of the island, creating North Tsushima Island (Kamijima) and South Tsushima Island (Shimojima).
 Tsushima also incorporates over 100 smaller islands (many tiny).
 The name Tsushima generally refers to all the islands collectively.
Iki Island (壱岐島 , Iki-no-shima ) , or the Iki Archipelago (壱岐諸島 , Iki-shotō ) is an archipelago in the Tsushima Strait, which is administered as the city of Iki in Nagasaki Prefecture, Japan.
 The islands have a total area of 138.46 sqkm with a total population of 28,008.
 Only four of the 23 named islands are permanently inhabited.
 Together with the neighboring islands of Tsushima, they are collectively within the borders of the Iki–Tsushima Quasi-National Park.
Tsushima (対馬市 , Tsushima-shi ) is a city located in Nagasaki Prefecture, Japan.
 It is the only city of Tsushima Subprefecture and it encompasses all of Tsushima Island Archipelago, which lies in the Tsushima Strait north of Nagasaki on the western side of Kyushu, the southernmost mainland island of Japan.
Tsushima Strait (対馬海峡 , Tsushima Kaikyō ) ; (Korean: 쓰시마 해협 "sseu-si-ma hae-hyeop") is the eastern channel of the Korea Strait, which lies between Korea and Japan, connecting the Sea of Japan and the East China Sea.
The Battle of Tsushima (Russian: Цусимское сражение , "Tsusimskoye srazheniye"), also known as the Battle of Tsushima Strait and the Naval Battle of the Sea of Japan (Japanese: 日本海海戦, "Nihonkai-Kaisen") in Japan, was a major naval battle fought between Russia and Japan during the Russo-Japanese War.
 It was naval history's only decisive sea battle fought by modern steel battleship fleets, and the first naval battle in which wireless telegraphy (radio) played a critically important role.
 It has been characterized as the "dying echo of the old era – for the last time in the history of naval warfare, ships of the line of a beaten fleet surrendered on the high seas".
Kamijima (上島 ) is the double-mountained 'northern end of Tsushima Island, which lies in the Korea Strait between the East China Sea to the south and the Sea of Japan to the north, and Korea to the west and mainland Japan to the east.
 The famous naval Battle of Tsushima was fought east and northeast of Kamino-shima in the Tsushima Strait.
 The northwest tip of Kamino-shima lies about 50km from Busan, South Korea.
Oryol (Russian: Орёл ) was a "Borodino"-class battleship built for the Russian Imperial Navy in the first decade of the 20th century.
 The ship was completed a few months before the start of the Russo-Japanese War in February 1904 and was assigned to the Second Pacific Squadron sent to the Far East six months later to break the Japanese blockade of Port Arthur.
 The Japanese captured the port while the squadron was in transit and their destination was changed to Vladivostok.
 "Oryol" was badly damaged during the Battle of Tsushima in May 1905 and surrendered to the Japanese who put her into service under the name of "Iwami" (Japanese: 石見 ).
Shinano Maru (信濃丸 ) was a 6,388 gt merchantman operated by the Nippon Yusen K.K Shipping Company (NYK).
 She was built by W. Henderson Co in Glasgow, for the express purpose of serving NYK’s Japan to Seattle route.
 NYK originally intended that she be built at the Mitsubishi Nagasaki shipyards in Japan; however, Mitsubishi had experienced problems in the completion of the "Hitachi Maru", which had led to considerable delays.
 NYK chose not to wait, and "Shinano Maru" was ordered to Scotland.
 She was completed in April 1900.
 During the Russo-Japanese War "Shinano Maru" was converted into an armed merchantman.
 She has the distinction of discovering the Russian Fleet near Tsushima Strait on the eve of the Battle of Tsushima.
 After the war "Shinano Maru" reverted to civilian use, being scrapped in 1951.

Question: Who captained the "Oryol" during Battle of Tsushima Strait?
Answer: Nikolay Viktorovich Yung