SS Hjejlen (Danish for The Golden Plover) is the world's oldest coal burning operational paddle steamers,[1] built in 1861 by Baumgarten & Burmeister, commissioned by a group of citizens headed by paper manufacturer Michael Drewsen.[2] She is used to carry tourists between Silkeborg and Himmelbjerget, but in 1932 she also became a public mail boat.[3]
Hjejlens steam engine has two cylinders, each with a bore of 10cm (00inches) and a stroke of 42cm (17inches). The engine yields and propels the vessel at up to .[4]
In 2011 Hjejlen celebrated her 150th anniversary with Queen Margrethe II in attendance.[5] A commemorative coin was issued by the National Bank of Denmark.[6]