Celebrity Constellation is a Millennium class cruise ship of Celebrity Cruises. The ship boasts a COGAS power plant of gas turbines and a steam turbine providing up to 60 Megawatts for the electric systems In 2007, she was refitted with the addition of a diesel engine as a fuel-saving measure. The ship can run on any combination of the gas turbines or diesel. In port, she generates electrical power from the diesel. Other features include Children's Pool and Children's Whirlpool Deck sports include Basketball, Golf Simulator, Shuffleboard, Jogging Duty-free Shopping, Jewelry, Souvenirs Fitness Center and Aerobics Classes Beauty Salon, Sauna & steam room Photo Gallery and Photo Shop for Cruise Photos, Film and Developing Outdoor Swimming Pool and 4 Whirlpools for total relaxation