Project 22220 icebreaker
The first ship, ("Арктика" – Arctic), was laid down in November 2013 and is expected to enter service in 2019. Launched on 16 June 2016, the ship will be the world's largest and the most powerful icebreaker surpassing the "50 Let Pobedy".
The second ship of this class, "Sibir" – ("Сибирь" – Siberia), was laid down on 26 May 2015 at Baltic Shipyard. On 1 July 2016, the hull of "Sibir", one third of the ship and weighing 3,500 t, was shifted to the place of the launched "Arktika" icebreaker, where construction will be completed. The shift made place for the start of the construction of the hull of the icebreaker "Ural" – ("Урал" – Ural). Construction of the Ural started on 25 July 2016.
USS Glacier (AGB-4)
USS "Glacier" (AGB-4) (later USCGC "Glacier" (WAG/WAGB-4)) was a U.S. Navy, then U.S. Coast Guard icebreaker which served in the first through fifteenth Operation Deep Freeze expeditions. "Glacier" was first icebreaker to make her way through the frozen Bellingshausen Sea, and most of the topography in the area is named for her crewmembers. When built, "Glacier" had the largest capacity single armature DC motors ever installed on a ship. "Glacier" was capable of breaking ice up to thick, and of continuous breaking of thick ice at .