re-deployed her to Los Angeles to sail complimentary cruises in March and April 2020 for first responders and military personnel. However, all sailings were cancelled after the company halted operations on 13 March 2020. The ship was berthed or anchored offshore near San Diego throughout much of the pandemic; after months of difficulty repatriating crew members, up to 480 crew members still remained on board the ship in May 2020. In summer 2021, Celebrity Millennium joined Celebrity Edge in becoming the second ship in its fleet to re-start North American Operations, offering few sailings out of St. Maarten prior to being repositioned to Seattle were in July 23 she became the 2nd ship worldwide to resume Alaska sailings. Design and specifications Millennium's original hull livery featured a predominantly dark blue paint with yellow and white bands lining the vessel. Upon delivery, she became the world's first cruise ship to use a turbo-electric COGAS power plant. The COGAS plant consists of gas and steam turbines, with the latter being driven by steam generated using the heat from the exhaust of the gas turbines. In this way, some of the otherwise lost energy is reclaimed and the specific fuel consumption of the plant is decreased. Propulsion is provided by two "Mermaid" azimuth pod-propulsion units from Kamewa and Cegelec (now Alstom). The ship was also built featuring the Olympic Restaurant, a specialty restaurant that contained the walnut wood panels that were used on the (sister ship to the ill-fated and ) and removed and preserved when the ship was sold for scrap in 1935. In early 2019, the ship was refurbished during a 35-day dry dock in Singapore at the Sembcorp Marine shipyard in Sembawang. Among the changes were 30 new passenger cabins. Recurring pod propulsion issues Months following her delivery, Millennium encountered problems with the bearings of her pod-propulsion system, which resulted in cancelled sailings for an emergency dry dock in December 2000 for repairs in Newport News Shipbuilding in Newport News, Virginia. In July 2007, the ship's propellers were damaged after striking a submerged rock during an electrical malfunction near Villefranche-sur-Mer, forcing the cancellation of numerous Mediterranean sailings. The damage was expected to negatively impact the earnings of Royal Caribbean by approximately $0.14 per share. In August 2013, the ship encountered problems with the electrical parts of the pods' motors that caused the cancellation of her remaining Alaskan sailings and forced