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