{{Short description|Russian Empire marine engineer (1872–1919)}} {{Infobox military person | name = Ivan Grigoryevich Bubnov | birth_date = {{Birth date|1872|01|18}} | death_date = {{Death date and age|1919|03|13|1872|01|18}} | birth_place = Nizhny Novgorod, Nizhegorodsky Uyezd, Nizhny Novgorod Governorate, Russian Empire | death_place = Petrograd | native_name = Иван Григорьевич Бубнов | native_name_lang = ru | image = Bubnov.png | caption = Ivan Bubnov | nickname = | allegiance = {{flag|Russian Empire}} | branch = {{navy|Russian Empire}} | service_years = 1907–1917 | rank = Major general of the Corps of Naval Constructors | commands = | other_work = }} '''Ivan Grigoryevich Bubnov''' ({{langx|ru|Ива́н Григо́рьевич Бу́бнов}}; 18 January 1872 – 13 March 1919) was a Russian naval engineer and mathematician who became the chief designer of submarines for the Imperial Russian Navy. He was responsible for designing most submarines of the Russian Navy before the Russian Revolution of 1917.
== Early life and education == Bubnov was born in Nizhny Novgorod and graduated from the Marine Engineering College in Kronstadt in 1891. He graduated from the Nikolayev Naval Academy in 1896.
== Career == thumb|left|Bubnov standing in front of ''Akula'' under construction He initially joined the Admiralty Shipyard in Saint Petersburg and worked as a constructor on the battleship {{ship|Russian battleship|Poltava|1894|2}}.
In 1900, he was appointed Chief Assistant at the Russian Admiralty test tank and was involved in the design of the first Russian submarine, the {{ship|Russian submarine|Delfin||2}}. In 1903, he became the Russian Admiralty's submarine designer and was responsible for the following submarine classes: * ''Kasatka'' class * ''Minoga'' * ''Akula'' * ''Morzh'' class * ''Bars'' class
In 1904, Bubnov became a lecturer at the Saint Petersburg Polytechnical University. He was commissioned into the Navy in 1907 and was head of the Admiralty test tank between 1908 and 1914.
Bubnov was promoted to major general in the Corps of Naval Engineers in 1912. Between 1912 and 1917, he was a consultant to the Baltic Works in Saint Petersburg and the Nobel & Lessner shipyard<ref>A joint venture of the Nobel family and the Lessner arms company, established in 1912 to obtain construction contracts for submarines.</ref> in Reval.
Bubnov died of typhoid in Petrograd in 1919.
==See also== thumb|Russian stamp from 1993 with Bubnov and the ''Bars''-class *Bubnov–Galerkin method
==References== *''This article is sourced by translation from the Russian Wikipedia'' <references />
==Sources== * {{cite book |last1=Friedman |first1=Norman |last2=Noot |first2=Jurrien |name-list-style=amp |year=1991 |title=Submarines of the Russian and Soviet Navies, 1718–1990 |publisher=Naval Institute Press |location=Annapolis, Maryland |isbn=0-87021-570-1 }}
{{Authority control}} {{DEFAULTSORT:Bubnov, Ivan}} Category:1872 births Category:1919 deaths Category:Military personnel from Nizhny Novgorod Category:People from Nizhegorodsky Uyezd Category:Marine engineers from the Russian Empire Category:Inventors from the Russian Empire Category:Submarine designers Category:Deaths from typhoid fever Category:N. G. Kuznetsov Naval Academy alumni Category:Recipients of the Order of St. Vladimir, 4th class Category:Recipients of the Order of St. Vladimir, 3rd class Category:Recipients of the Order of St. Anna, 2nd class Category:19th-century mathematicians from the Russian Empire Category:Imperial Russian Navy officers Category:Mechanical engineers from the Russian Empire Category:Shipbuilders from the Russian Empire