# Jacob Kalff

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Dutch businessperson and politician

Jacob Kalff Kalff in 1933 Minister of Water Management In office 26 May 1933 – 13 January 1935 Prime Minister Hendrikus Colijn Preceded by Paul Reymer Succeeded by Hendrikus Colijn Personal details Born Jacob Adriaan Kalff (1869-04-27)27 April 1869 Zwolle, the Netherlands Died 13 January 1935(1935-01-13) (aged 65) Wassenaar, the Netherlands Party Liberal State Party Alma mater Polytechnic School Occupation Politician, businessperson

**Jacob Adriaan Kalff** (27 April 1869 – 13 January 1935) was a Dutch businessperson and politician. He was a member of the [Liberal State Party](/source/Liberal_State_Party). He was director of the [Nederlandse Spoorwegen](/source/Nederlandse_Spoorwegen) and served as [Minister of Transport and Water Management](/source/Ministry_of_Transport%2C_Public_Works_and_Water_Management).

## Biography

### Personal life

Kalff was the son of [Jan Kalff](https://en.wikipedia.org/w/index.php?title=Jan_Kalff&action=edit&redlink=1) [[nl](https://nl.wikipedia.org/wiki/Jan_Kalff_(stedenbouwkundige))] (1931–1913), engineering officer and chief engineer at the railways, and Maria Judith Catharina van Hasselt. He married on 12 May 1898 to Johanna Elisabeth Hillegonda Adriana Wichers Hoeth. They had three sons and one daughter. Kallf died from a [flu](/source/Flu) with [pneumonia](/source/Pneumonia) on 13 January 1935, at the age of 65.[1]

### Career

After studying at the [Polytechnic School](/source/Delft_University_of_Technology) in [Delft](/source/Delft) he worked at the [Hollandsche IJzeren Spoorweg-Maatschappij](/source/Hollandsche_IJzeren_Spoorweg-Maatschappij). Kalff committed himself to the unification of the various railway organizations and became director of [Rail transport companies](/source/Rail_transport_companies) and director of the newly formed [Nederlandse Spoorwegen](/source/Nederlandse_Spoorwegen).[1]

Kalff served as [Minister of Transport and Water Management](/source/Ministry_of_Transport%2C_Public_Works_and_Water_Management) from May 1933 until his death in 1935.[1][2][3]

In the [cover-up](/source/Cover-up) report about the responsibility of the [1934 KLM Douglas DC-2 crash](/source/1934_KLM_Douglas_DC-2_crash) published nearly 50 years after the crash, stated that next to the [KLM](/source/KLM), Kalff was responsible for the crash. Kalff was blamed he had given out a certificate of airworthiness for the [Uiver](/source/Uiver) aircraft with fewer demands than desired due to the "major interests of KLM" and he should not have issued a passenger permit. The six demands requested by the Kalff in return for giving out the certificate were not implemented by KLM.[4]

## References

1. ^ [***a***](#cite_ref-knaw_1-0) [***b***](#cite_ref-knaw_1-1) [***c***](#cite_ref-knaw_1-2) ["KALFF, Jacob Adriaan (1869–1935)"](https://resources.huygens.knaw.nl/bwn1880-2000/lemmata/bwn3/kalffja) (in Dutch). Royal Netherlands Academy of Arts and Sciences. Retrieved 19 September 2023.

1. **[^](#cite_ref-parlement_2-0)** ["Ir. J.A. Kalff"](https://www.parlement.com/id/vg09lljalau9/j_a_kalff). *parlement.com* (in Dutch). Retrieved 19 September 2023.

1. **[^](#cite_ref-3)** Ginkel, Rob van (2009). [*Braving Troubled Waters: Sea Change in a Dutch Fishing Community*](https://books.google.com/books?id=lR14D2Xo-2sC&dq=Jacob+Kalff&pg=PA112). Amsterdam University Press. [ISBN](/source/ISBN_(identifier)) [978-90-8964-087-1](https://en.wikipedia.org/wiki/Special:BookSources/978-90-8964-087-1).

1. **[^](#cite_ref-hvv2601_4-0)** ["Geheim rapport over ramp met PH-AJU | Uiver vloog de dood tegemoet"](https://resolver.kb.nl/resolve?urn=ddd:010961625:mpeg21:p007). *[Het Vrije Volk](/source/Het_Vrije_Volk)* (in Dutch). 26 January 1984. p. 7 – via [Delpher](/source/Delpher).

Political offices Preceded by Paul Reymer Minister of Water Management 1933–1935 Succeeded by Hendrikus Colijn

v t e Ministers of transport and water management of the Netherlands Ministry of Transport and Water Management Lely De Marez Oyens Kraus Veegens Kraus Bevers Talma Regout Lely König Van Swaay Bongaerts Van der Vegte Reymer Kalff Colijn Van Lidth de Jeude Van Buuren Van Lidth de Jeude Albarda Wijffels Tromp S. Van Schaik Vos J. Van Schaik Spitzen Wemmers Algera Witte Van Aartsen Korthals Van Aartsen Suurhoff Bogaers Suurhoff De Quay Bakker Drees Jr. Udink Westerterp Tuijnman Zeevalking Kroes Maij-Weggen Andriessen Jorritsma Netelenbos De Boer Peijs Eurlings

v t e Second Colijn cabinet (1933–1935) Preceded: Third Ruijs de Beerenbrouck cabinet Succeed: Third Colijn cabinet Prime Minister Hendrikus Colijn (Colonial Affairs) Ministers Jacob Adriaan de Wilde (Interior) Andries Cornelis Dirk de Graeff (Foreign Affairs) Pieter Oud (Finance) Josef van Schaik (Justice) Timotheus Verschuur (Economic Affairs and Labour) (1933) Timotheus Verschuur (Economic Affairs) (1933–1934) Hendrikus Colijn (Economic Affairs) (Ad interim) Max Steenberghe (Economic Affairs) (1934–1935) Henri Gelissen (Economic Affairs) (from 1935) Laurentius Nicolaas Deckers (Defence) Jan Rudolph Slotemaker de Bruïne (Social Affairs) (from 1933) Henri Marchant (Education, Arts and Sciences) (1933–1935) Jan Rudolph Slotemaker de Bruïne (Education, Arts and Sciences) (from 1935) Jacob Kalff (Water Management) (1933–1935) (†) Hendrikus Colijn (Water Management) (Ad interim) Otto van Lidth de Jeude (Water Management) (from 1935)

v t e 1934 KLM Douglas DC-2 crash Aircraft Uiver People Victims Wim Beekman Dominique Willem Berretty Eduard Willem Walch Responsible Albert Plesman Jacob Kalff Investigators Hendricus van der Maas George Lodewijk Schorer Otherly involved Jan H. de Groot List of KLM accidents and incidents

Authority control databases International ISNI VIAF WorldCat National Netherlands People Netherlands

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Adapted from the Wikipedia article [Jacob Kalff](https://en.wikipedia.org/wiki/Jacob_Kalff) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Jacob_Kalff?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.