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.
Liftboat
The naval architecture firm A. K. Suda, Ltd. has successfully completed the
design of a 450-foot (137.25m) truss-legged liftboat for Teras Offshore.
Built by Triyards Marine, Saigon Shipyard in HCMC,
Vietnam, this vessel, which is the world’s largest
liftboat, was delivered at the end of 2nd Quarter 2014.
This state-of-the-art vessel is a 3-legged, self-propelled,
self-elevating general service workboat,
known as the BH-450, and is suitable for operation in
the North Sea. It is an ABS classed with Unrestricted
Service, DP-1, Accommodation Service DRC, and
carries a Wind Farm Installation Maintenance and
Repair Certification. The molded steel hull
dimensions are 60m x 54m x 6m. It has two deck
cranes, one leg encircling around the starboard
jackcase, and the other, a pedestal crane on the port
side of the vessel. The quarters arrangement can
accommodate 250 persons including crew.
With the long legs on this vessel, this Self-Elevating
Unit is capable of working in water depths up to 367
feet. A unique feature of this vessel is its easy
deployment. Unlike other vessels in this size
range, this Mobile Offshore Unit has no rack chocks.