Icebreaker
In May 2007, sea trials were completed for the nuclear-powered Russian icebreaker NS . The vessel was put into service by Murmansk Shipping Company, which manages all eight Russian state-owned nuclear icebreakers. The keel was originally laid in 1989 by Baltic Works of Leningrad, and the ship was launched in 1993 as NS "Ural". This icebreaker was intended to be the sixth and last of the "Arktika" class, and currently is the world's largest icebreaker.
List of icebreakers
The following icebreaking supply ships have been used in the Caspian oil fields:The following lists include icebreakers owned and/or operated by both government-owned as well as commercial entities.The following ships are anchor handling tug supply vessels, platform supply vessels, research vessels, patrol vessels or other multipurpose vessels with significant icebreaking capability.
Three icebreaking anchor handling tug supply vessels were chartered by the Swedish Maritime Administration for escort icebreaking duties in the Baltic Sea until 2015.