This article must adhere to the biographies of living persons (BLP) policy, even if it is not a biography, because it contains material about living persons. Contentious material about living persons that is unsourced or poorly sourcedmust be removed immediately from the article and its talk page, especially if potentially libellous. If such material is repeatedly inserted, or if you have other concerns, please report the issue to this noticeboard.If you are a subject of this article, or acting on behalf of one, and you need help, please see this help page.
This article is rated Stub-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects:
This article is within the scope of WikiProject Olympics, a collaborative effort to improve the coverage of Olympics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.OlympicsWikipedia:WikiProject OlympicsTemplate:WikiProject OlympicsOlympics articles
This article is within the scope of WikiProject Biography, a collaborative effort to create, develop and organize Wikipedia's articles about people. All interested editors are invited to join the project and contribute to the discussion. For instructions on how to use this banner, please refer to the documentation.BiographyWikipedia:WikiProject BiographyTemplate:WikiProject Biographybiography articles
This article falls within the scope of WikiProject Netherlands, an attempt to create, expand, and improve articles related to the Netherlands on Wikipedia. If you would like to participate, visit the project page where you can join the project or contribute to the discussion.NetherlandsWikipedia:WikiProject NetherlandsTemplate:WikiProject NetherlandsNetherlands articles
This article is within the scope of WikiProject Rowing, a collaborative effort to improve the coverage of rowing on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.RowingWikipedia:WikiProject RowingTemplate:WikiProject Rowingrowing articles
Start a discussion about improving the Sipke Castelein page
Talk pages are where people discuss how to make content on Wikipedia the best that it can be. You can use this page to start a discussion with others about how to improve the "Sipke Castelein" page.
