Ivan de Collong

Infobox Person
name = Ivan de Collong


caption = Ivan de Collong
birth_date = OldStyleDate|2 March|1838|22 February
birth_place = Dinaburg, Vitebsk Guberniya, Russian Empire (now Daugavpils, Latvia)
death_date = OldStyleDate|26 May|1901|13 May
death_place = Saint Petersburg, Russia

Ivan Petrovich de Collong ( _ru. Иван Петрович де-Колонг; _de. Johann Clappier de Colongue; _lv. Johans Aleksandrs Heinrihs Klapje de Kolongs) (OldStyleDate|2 March|1838|22 February–OldStyleDate|26 May|1901|13 May) was a Russian marine engineer and founder of a theory of magnetic deviation for magnetic compasses.

Ivan Petrovich de Collong was born in 1839 in Dinaburg (now Daugavpils) into a Baltic German noble family originally of Franco-Portuguese origin. He studied at the Naval Academy in Saint Petersburg and from 1870 he worked there as a lecturer. Starting in 1878 he was head of the Navy's Main Hydrographical Administration. In 1875 he constructed a new type compass baffle and later improved upon its design.

De Collong was a Corresponding Member of the Russian Academy of Sciences (from 1896) and a Major-General of the Imperial Russian Navy. He was awarded the Lomonosov Prize of the Russian Academy of Sciences.

External links

* [http://slovari.yandex.ru/dict/bse/article/00035/98900.htm "Ivan Petrovich de Collong"] at Great Soviet Encyclopedia - ru icon
* [http://vivovoco.rsl.ru/VV/PAPERS/BIO/KRYLOV/KRYLOV_07.HTM Memoirs of] Alexei Krylov - ru icon