Krišjānis Valdemārs was an icebreaker of the Ministry of Trade and Industry of the Republic of Latvia from 1926 to 1941.

It was designed to clear shipping lanes from the ice in the freezing port of Riga, but was also used for escorting the President and members of the government on foreign visits.

Krišjānis Valdemārs sailed on 13 January 1926 on its first voyage from the port of Riga.

Krišjānis Valdemārs, loaded with cargo, was bombed and sunk in the Gulf of Finland by Junkers Ju 88 aircraft of Kampfgeschwader 77, Luftwaffe.

[2] In 2011, Estonian submarine archaeologist Vello Mäss was able to identify the wreck of Krišjānis Valdemārs at a depth of about 100 metres (330 ft) by submerged filming in the Gulf of Finland near Mohni Island near Juminda Cape.