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 destroyer classes of the United States Navy
The , the lead ship of the , was the first destroyer named after a living person—World War II Admiral Arleigh Burke. At her commissioning, USS "Arleigh Burke" was extolled as the most powerful surface warship ever built. "Arleigh Burke" is one-third longer and correspondingly heavier than the "Fletcher"-class destroyers of the squadron Burke commanded in World War II; but about the same complement. The "Arleigh Burke"-class destroyers were based around the "Aegis" Combat System, like the larger s. The "Arleigh Burke" class was introduced in four "flights": Flight I, consisting of "Arleigh Burke"; Flight IA composed of 20 ships; Flight II, composed of 7 ships; and Flight IIA, composed of 34 ships. The "Arleigh Burke" class became the U.S. Navy's only active destroyer class when the last member of the "Spruance" class was decommissioned in 2005.