🌐EnglishEnglishFrançaisNederlandsEntityQ1964296· pop 6· linked from 88 articlesHNLMS O 11Also known as O 11Dutch O 9-class patrol submarineWikidata factsImageHr. Ms. O 11.jpgSources (1)en.wikipedia.orgvia Wikidata · CC0Available in 5 languagesFrançaisFinnishNederlandsUkrainianvia Wikidata sitelinks · CC0ConnectionsWorld War IIConceptRotterdamEntityCategories1925 shipsMaritime incidents in March 1940Maritime incidents in May 1940O 9-class submarinesShips built in SchiedamSubmarines built by Maatschappij voor Scheeps- en Werktuigbouw FijenoordSubmarines sunk in collisionsWorld War II submarines of the Netherlands