Marella Explorer 2, formerly Celebrity Century and  SkySea Golden Era, was the lead ship of the Century class of cruise ships for Celebrity Cruises, and the co-flagship of the Celebrity fleet, along with Millennium-class ship , and the newest Solstice class, .
Marella Explorer 2, formerly Celebrity Century and SkySea Golden Era, was the flagship of the Century class of cruise ships for Celebrity Cruises, and the co-flagship of the Celebrity fleet, alongside the Millennium-class ship, and the newest Solstice-class vessel.