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Two motor ships have borne the name Polarbjørn:
- MV Polarbjørn (1974) is a 497-ton icebreaker completed on 18 January 1975, by Vaagen Verft, Kyrksæterøra, Norway. Sold in 1995 to Greenpeace, and renamed Arctic Sunrise
- MV Polarbjørn (2001) is a 4,985 ton icebreaker launched on 21 July 2001. Chartered and renamed HMS Protector in 2011; sold to the Royal Navy in 2013.
|This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.|