World’s largest cruise ship – powered and propelled by ABB

2007-05-21 - Liberty of the Seas, the world’s largest cruise ship, set off on its maiden voyage from Miami on May 19, powered and propelled by an energy-efficient ABB power and propulsion solution that uses considerably less fuel than alternative technologies.

By Editorial services

Royal Caribbean International’s Liberty of the Seas left from Miami Saturday on its maiden cruise of the western Caribbean, calling at Mexico, Grand Cayman, Jamaica and Haiti.

Liberty of the Seas passes under in the Verrazano-Narrows bridge in New York harbor on May 3. (Photo courtesy Royal Caribbean)

The 160,000 ton luxury liner is the biggest cruise ship ever built in terms of both gross tonnage and passenger capacity. It carries 3,634 guests and 1,360 crew on 18 decks, and has a cruising speed of 21.6 knots.

Liberty of the Seas is one of three identical ships in Royal Caribbean’s Freedom class of luxury cruise liners. Freedom of the Seas was launched in 2006 and Independence of the Seas is scheduled to make her debut in 2008. All three vessels are equipped with the same uniquely energy-efficient ABB power and propulsion solution.

Single-vendor package

The solution combines ABB’s Azipod® podded propulsion system with a complete ABB electrification system that includes generators, medium voltage switchboards, transformers, variable speed drives, protection units, bow thruster motors and low voltage distribution equipment.

Azipod consumes between 10-15 percent less fuel than alternative propulsion systems and reduces greenhouse gas emissions by a corresponding amount.

Other well-documented benefits include unrivalled maneuverability in port and the reduction of noise and vibration to undetectable levels – key attributes in cruise ships where passenger comfort and wellbeing are critical.

More than 120 Azipod propulsion units are currently in operation worldwide, with a combined operating time of 2.7 million running hours and 99.7 percent availability.

ABB is the world’s leading supplier of power and propulsion systems for the marine industry.

ABB’s scope of supply
3 x 14 megawatt Azipod® prolusion units
6 x 17,600 kVA main generators
11 kV main switchboard
6 x 13,200 kVA propulsion transformers
3 x cycloconverter drives
4 x 3,400 kW thruster motors
Ship supply and engine transformers
Low voltage switchboards
Liberty of the Seas
Built at Aker Yards, Finland
Owned by Royal Caribbean International
Gross tonnage: 160,000 tons
Length: 339 meters
Breadth, max: 56 m
Cruising speed: 21.6 knots
Number of decks: 18
Passenger capacity: 3,634 (double occupancy), 4,375 (total)
Crew: 1,360
Cost: Approximately $1.15 billion

(Click here to read an appraisal of Azipod by a Royal Caribbean International senior vice president)

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    Liberty of the Seas is the latest addition to Royal Caribbean’s Freedom class of luxury cruise liners. All three of RC's Freedom class vessels are equipped with an energy-efficient ABB power and propulsion solution. (Photo courtesy Aker Yards)

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