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Isaac Sweers (occasionally Ysaack Sweerts; 1 January 1622 – 22 August 1673) was a 17th-century Dutch vice-admiral with the Admiralty of Amsterdam who fought in the Anglo-Dutch Wars.

Isaac Sweers
Portrait of Vice-Admiral Isaac Sweers (cropped).jpg
Sweers before 1673, by B. Vaillant
Other name(s)Ysaack Sweerts
Born(1622-01-01)1 January 1622
Nijmegen, Dutch Republic
Died22 August 1673(1673-08-22) (aged 51)
off Texel, Dutch Republic
Allegiance Dutch Republic
AdmiraltyAdmiralty of Amsterdam
Years of service1649–1673
Spouse(s)Constantia Bloemaert (1655)
RelationsSalomon Sweers (brother)

HNLMS Isaac Sweers was a Gerard Callenburgh-class destroyer of the Royal Netherlands Navy, named after Sweers.


  • Bruijn, J. R., ed. (1966). "Dagregister van Isaäc Sweers". De oorlogvoering ter zee in 1673 (in Dutch). Groningen: Wolters. pp. 106–155. OCLC 780639117.
  • Herman, H. (1921). "Sweers, Isaac". Nieuw Nederlandsch Biografisch Woordenboek (in Dutch). 5. Leiden: Sijthoff. pp. 850–851. OCLC 277609365.
  • Van der Aa, A. (1874). "Sweerts, Ysaack". Biographisch Woordenboek der Nederlanden (in Dutch). 17. Haarlem: Brederode. pp. 1113–1114. OCLC 312812085.

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