Arktika-class icebreaker
The "Arktika" class is a Russian (former Soviet) class of nuclear-powered icebreakers. Formerly known as "Project 10520 nuclear-powered icebreaker", they were the largest and most powerful icebreakers until the 2016 launch of the ship named Arktika. Ships of the "Arktika" class are owned by the federal government, but were operated by the Murmansk Shipping Company (MSCO) until 2008, when they were transferred to the fully government-owned operator Atomflot. Of the ten civilian nuclear-powered vessels built by Russia (and the Soviet Union), six have been of this type. They are used for escorting merchant ships in the Arctic Ocean north of Siberia as well as for scientific and recreational expeditions to the Arctic.
Norwegian Epic
The "Norwegian Epic" surpasses the "Breakaway"-class as NCL's second largest ship class. The "Breakaway Plus"-class is the largest in the NCL fleet so the . "Norwegian Epic" represents the "third generation" of Freestyle cruising vessels and its size allows NCL to have ships in the "mega-class" of their competitors at Royal Caribbean International and Carnival Cruise Lines, though still 32% smaller by gross tonnage than Royal Caribbean's Oasis of the Seas, Allure of the Seas and Harmony of the Seas, the world's largest passenger vessels.