GE Engines power ship of dreams

GE Marine Engines’ aeroderivative gas turbines will be used aboard Cunard Line’s Queen Mary 2, the world’s largest passenger vessel.

GE Marine Engines’ LM2500+ aeroderivative gas turbine will be used aboard Cunard Line’s Queen Mary 2 transatlantic liner. Upon completion in 2003, this will be the world’s largest passenger vessel.

The liner will use two GE LM2500+ gas turbine generator sets in a Combined Diesel and Gas Turbine (CODAG) configuration with four diesel engines. Top speed is expected to reach 30 knots.

The 40,500 shaft horsepower LM2500+ is GE’s newest aeroderivative gas turbine. Based on the GE LM2500 design, it delivers up to 25% more power at a simple-cycle thermal efficiency in excess of 39%. It is designed to achieve reliability equal to the precedent-setting 99.6% reliability of the LM2500.

The 150,000-gross ton Queen Mary 2 itself will be the first vessel to be propelled by four podded propellers extending beneath the hull.

The two forward pods are fixed and the two aft pods are steerable. Tests conducted using a model of this steering system showed the liner will be capable of performing maneuvers in compliance with standards for similar vessels using different propulsion and steering systems.

Two sets of stabilisers likewise performed as expected, smoothing the model’s motion to create an enviable standard of comfort on board.

Chantiers de l’Atlantique, St. Nazaire, France will build the 1,132-foot long, 135-foot wide Queen Mary 2. The liner will be as tall as a 23-story building, will be the most costly passenger ship ever built, with a total estimated cost of $780 million, and will carry 2,620 guests and 1,254 crew.

By comparison, Cunard’s Queen Mary measures a mere 81,000 gross tons when it set sail in 1936, with accommodations for 776 cabin class, 784 tourist class and 579 third class passengers.

The LM2500+ gas turbines will be manufactured at GE Marine Engines’ Evendale, Ohio facility. The LM2500+ gas turbine-generator sets were sold and will be packaged by GE Aero Energy Products, Houston, Texas. GE Aero Energy Products is a GE Power Systems business and a GE Marine Engines Marine Systems Supplier.

The 40,500 shaft horsepower LM2500+ is GE’s newest aeroderivative gas turbine. Based on the design of the GE LM2500, it delivers up to 25% more power at a simple-cycle thermal efficiency in excess of 39%. It is designed to achieve reliability equal to the 99.6% reliability of the LM2500.